Department of Horticulture

Common Name List

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Aaron's Beard
         Creeping St. John’s Wort      Hypericum calycinum
Abelia
         Edward Goucher      Abelia 'Edward Goucher'
         Glossy      Abelia × grandiflora
                 Francis Mason       Abelia × grandiflora 'Francis Mason'
                 Kaleidoscope      Abelia × grandiflora 'Kaleidoscope'
                 Sunrise      Abelia × grandiflora 'Sunrise'
Abelialeaf
         Korean, White Forsythia      Abeliophyllum distichum
Actinidia
         Kolomikta      Actinidia kolomikta
Adromeda
         Japanese      Pieris japonica
Akebia
         Fiveleaf      Akebia quinata
Albizia
         Silk Tree, Mimosa      Albizia julibrissin
Alder   (Alnus)
         Common, European, Black       Alnus glutinosa
                  Cutleaf       Alnus glutinosa 'Laciniata'
         Italian      Alnus cordata
         Japanese      Alnus japonica
         Red, Oregon      Alnus rubra
                  Cutleaf       Alnus rubra f. pennatisecta
         Sitka      Alnus sinuata
         Speckled      Alnus rugosa (syn. Alnus incana ssp. rugosa)
         White      Alnus rhombifolia
         Thinleaf      Alnus tenuifolia (syn. Alnus incana ssp. tenuifolia)
Allspice  (Sweetbush)  (Calycanthus)
         California, Western Sweetbush      Calycanthus occidentalis
         Carolina, Common Sweetbush      Calycanthus floridus
         Hartlage Wine, Hartlage Wine Sweetbush      Calycanthus raulstonii ‘Hartlage Wine’
         Raulston's, Raulston's Sweetbush      Calycanthus raulstonii ‘Hartlage Wine’
Almond
         Dwarf Flowering      Prunus glandulosa
Alum Root   see Coral Bells
Ampelopsis
         Porcelain      Ampelopsis brevipedunculata
                  Elegans   Ampelopsis brevipedunculata 'Elegans'
Anise Tree
         Florida      Illicium floridanum
Apricot
         Common      Prunus armeniaca
         Japanese, Japanese Flowering      Prunus mume
                  Contorted      Prunus mume 'Contorta'
                  Peggy Clarke      Prunus mume 'Peggy Clarke'
                  Trumpet      Prunus mume 'Trumpet'
Arborvitae
         American      Thuja occidentalis
         Eastern      Thuja occidentalis
         False      Thujopis dolabrata
         Hiba      Thujopis dolabrata
         Oriental      Thuja orientalis, Pladycladus orientalis
         Russian      Microbiota decussata
         Siberian      Microbiota decussata
Ardisia
         Japanese, also Marlberry      Ardisia japonica
Arrayan
         Arrayan, Palo Colorado      Luma apiculata
Ash  (Fraxinus)
         Blue            Fraxinus quadrangulata
         Dwarf, Singleleaf             Fraxinus anomala
         European, Common      Fraxinus excelsior
                Golden Desert       Fraxinus excelsior  Golden Desert^®
         Flowering      Fraxinus ornus
         Golden Desert       Fraxinus excelsior  Golden Desert^®
                (syn. F. angustifolia Golden Desert^®, F. oxycarpa Golden Desert^®, and
                Fraxinus angustifolia ssp. oxycarpa 'Golden Desert')
         Green            Fraxinus pennsylvanica
         Japanese or Chinese Flowering      Fraxinus sieboldiana
         Leprechaun      Fraxinus pennsylvanicum Leprechaun™  (syn. ‘Johnson’)
         Marshall, Marshall's Seedless      Fraxinus pennsylvanicum ‘Marshall’  (syn. ‘Marshall's Seedless’)
         Oregon      Fraxinus latifolia
         Raywood      Fraxinus oxycarpa 'Raywood'  (syn. F. angustifolia 'Raywood')
         Siebold            Fraxinus sieboldiana
         Singleleaf, Dwarf             Fraxinus anomala
         White             Fraxinus americana
Aspen
         Bigtooth       Populus grandidentata
         Quaking       Populus tremuloides
Aster
         New England      Aster novae-angliae
Aucuba
           Japanese  Aucuba japonica
           Variegated selections
                  Gold Dust Plant, Variegated Aucuba  Aucuba japonica ‘Variegata’
                  Mr. Goldstrike Aucuba  Aucuba japonica ‘Mr. Goldstrike’
                  Picturata Aucuba  Aucuba japonica ‘Picturata’
Azalea    also see Rhododendron
           Deciduous  Rhododendron    deciduous azalea, examples
           Delaware Valley White  Rhododendron ‘Delaware Valley White’
           Desert or Mock   Adenium obesum
           False  (Rusty Manziesia, Fool's Huckleberry)  Menziesia ferruginea
           Frilly Lemon  Rhododendron ‘Frilly Lemon’
           Girard's Purple  Rhododendron ‘Girard's Purple’
           Hardijzer's Beauty Azaleodendron  Rhododendron ‘Hardijzer's Beauty’
           Hino Crimson  Rhododendron ‘Hino Crimson’
           Hinode Giri  Rhododendron ‘Hinode Giri’
           Irene Koster  Rhododendron occidentale ‘Irene Koster’
           Ken Janeck  Rhododendron ‘Ken Janeck’
           Kiusianum  Rhododendron kiusianum
           Lights Azalea Hybrids   Rhododendron   Lights Azalea Hybrid Series
                  Including: 'Northen Lights', 'Orchid Lights', 'Rosy Lights', and 'White Lights'
           Mock or Desert   Adenium obesum
           Plumleaf  Rhododendron prunifolium
           Pontic  Rhododendron luteum
           Purple Splendor  Rhododendron ‘Purple Splendor’
           Quinquefolium  Rhododendron quinquefolium
           Royal  Rhododendron schlippenbachii
           Spider  Rhododendron stenopetalum ‘Linearifolium’
           Western   Rhododendron occidentale
           Wild Thyme   Rhododendron serpyllifolium
                   White Wild Thyme  Rhododendron serpyllifolium var. albifolrum
Azara
         Boxleaf      Azara microphylla
                 Variegated Boxleaf  Azara microphylla ‘Variegata’
Baby's Breath
           Baby's Breath  Gypsophila paniculata
Baldcypress
           Common, Swamp  Taxodium distichum
                  Dwarf selection  Taxodium distichum‘Peve Minaret’
           Pond  Taxodium ascendens
Bamboo
           Heavenly, Scared, Nandina  Nandina domestica
           Mexican, Japanese Knotweed  Polygonum cuspidatum (syn. Fallopia japonica)
Barberry   (Berberis)
           California, California Grape Holly  Berberis pinnata  syn. Mahonia pinnata
           Darwin   Berberis darwinii
           Dwarf Magellan   Berberis buxifolia ‘Nana’
           Emerald Carousel^TM (‘Tara’)  Berberis Emerald Carousel^TM
           Evergreen  Berberis replicata
           Golden Japanese    Berberis thunbergii ‘Aurea’
           Irwini Rosemary   Berberis × stenophylla ‘Irwinii’
           Island  Berberis pinnata subsp. insularis  syn. Mahonia pinnata subsp. insularis
           Japanese  Berberis thunbergii
                  Aurea   Berberis thunbergii ‘Aurea’
                  Golden Nugget   Berberis thunbergii Golden Nugget^TM
                  Kobold  Berberis thunbergii ‘Kobold’
                  Sunsation   Berberis thunbergii Sunsation^TM
                  Purple (Red) Leaf    Berberis thunbergii var. atropurpurea
                           Crimson Pigmy  Berberis thunbergii var. atropurpurea ‘Crimson Pigmy’
                           Golden Ring  Berberis thunbergii var. atropurpurea ‘Golden Ring’
                           Rose Glow  Berberis thunbergii var. atropurpurea ‘Rose Glow’
                           Royal Burgundy  Berberis thunbergii var. atropurpurea Royal Burgundy^TM
           Mentor  Berberis × mentorensis
           Rosemary  Berberis × stenophylla
                  Irwinii  Berberis × stenophylla ‘Irwinnii’
                  Nana, Dwarf  Berberis × stenophylla ‘Nana’
           Threespine, Wisley   Berberis triacanthophora (syn. Berberis × wisleyensis)
           Warty   Berberis verruculosa
           William Penn  Berberis × gladwynensis ‘William Penn’
           Wintergreen   Berberis julianae
           Wisley, Threespine  Berberis × wisleyensis (syn. Berberis triacanthophora)
Basket-of-Gold
           Basket-of-Gold   Aurinia saxatilis
Basswood  ( see Tilia)
Bay (leaf)
           California, Oregon Myrtle, California Laurel  Umbellularia californica
           Turkish, True  Laurus nobilis
Bayberry
           Chinese, Japanese or Red  Myrica rubra
           Northern B  Myrica pensylvanica
Bearberry
           Bearberry, Kinnikinick  Arctostaphylos uva-ursi
                  Massachusetts  Arctostaphylos uva-ursi ‘Massachusetts’
                  Point Reyes  Arctostaphylos uva-ursi ‘Point Reyes’
                  San Bruno Mountain  Arctostaphylos uva-ursi ‘San Bruno Mountain’
Beautyberry
           Bodinier  Callicarpa bodinieri
           Purple  Callicarpa dichotoma
Beautybush
           Beautybush  Kolkwitzia amabilis
Bee-balm
           Bee-balm    Monarda didyma
Beebee Tree
           Beebee Tree, Korean Evodia  Tetradium daniellii, syn. Evodia daniellii
Beech
           American   Fagus grandifolia
           Blue (syn. American Hornbeam)  Carpinus caroliniana
           European  Fagus sylvatica
                  Fernleaf   Fagus sylvatica ‘Asplenifolia’
                  Purpleleaf or Copperleaf   Fagus sylvatica ‘Purpurea’  aka ‘Atropurpurea’ and ‘Cuprea’
                  Tricolor, Purpurea Tricolor, Roseomarginata  Fagus sylvatica ‘Tricolor’
                  Weeping   Fagus sylvatica f. pendula
                  Additional selections:  Fagus sylvatica ‘Miltonensis’,  ‘Purple Fountain’  and  ‘Red Obelisk’
           New Zealand Red   Nothofagus fusca
           Roblé   Nothofagus obliqua
           Southern, False   Nothofagus anarctica
Begonia
           Wax   Begonia semperflorens
Bergenia
           Heartleaf   Bergenia cordifolia
Birch      (Betula)
           Asian Black, Dahurian  Betula davurica
           Asian White, Manchurian  Betula platyphylla
                  Dakota Pinnacle, Asian White  Betula platyphylla Dakota Pinnacle®
           Bog, Dwarf  Betula nana
           Cherry, Sweet   Betula lenta
           Chinese Paper, Chinese Red  Betula albo-sinensis
           Dwarf  Betula glandulosa
           European White  Betula pendula
                  Cutleaf   Betula pendula  ‘Laciniata’
                  Purple  Betula pendula  ‘Purpurea’
                  (Young's) Weeping  Betula pendula  ‘Youngii’
           Heritage  Betula nigra HeritageÔ
           Gray, Fire  Betula populifola
                  Whitespire Senior  Betula populifola ‘Whitespire Senior’
           Manchurian, Asian White  Betula platyphylla
           Monarch Betula maximowicziana
           Paperbark  Betula papyrifera
           River    Betula nigra
                  Fox Valley  Betula nigra Fox ValleyÔ (syn. 'Little King').
                  Heritage   Betula nigra HeritageÔ
           Sweet, Cherry   Betula lenta
           Water   Betula occidentalis
           Whitebarked Himalayan  Betula jacquemontii
           Whitespire Senior, Whitespire  Betula populifola ‘Whitespire Senior’
           Yellow    Betula alleghaniensis
           Young's Weeping   Betula pendula  ‘Youngii’
Bitterbrush      (Purshia)
           Bitterbrush, Antelope Bush  Purshia tridentata
Bittersweet      (Celastrus)
           American, Climbing  Celastrus scandens
Blackberry
           California, Trailing, Pacific  Rubus ursinus
           Evergreen  Rubus laciniatus
           Himalayan, Himalaya  Rubus discolor (syn. R. procerus, R. armeniacus)
           Trailing, Western, Pacific  Rubus ursinus
Black-eyed Susan
           Black-eyed Susan   Rudbeckia fulgida
Blanket Flower
           Blanket Flower   Gaillardia × grandiflora
Bleeding Heart
           Common   Dicentra spectabilis
           Pacific   Dicentra formosa
Bluebeard
           Bluebeard, Blue Mist, Blue-spirea   Caryopteris × clandonensis
Blueberry
           Creeping  Vaccinium crassifolium
           Evergreen  Vaccinium ovatum
           Highbush  Vaccinium corymbosum
           Himalayan  Vaccinium moupinense
           Lowbush  Vaccinium angustifolium
                  Burgundy  Vaccinium angustifolium ‘Burgundy’
           Sikkim  Vaccinium sikkimense
Blue Blossom
           Blue Blossom   Ceanothus thyrsiflorus
Blue Mist
           Blue Mist, Bluebeard, Blue-spirea   Caryopteris × clandonensis
Bog Rosemary
           Bog Rosemary  Andromeda polifolia
Boxelder
           Boxelder  Acer negundo
                  Sensation  Acer negundo ‘Sensation’
                  Variegated  Acer negundo ‘Variegata’
Boxwood      (Buxus)
            Bodinier's  Buxus bodinieri
           Common  Buxus sempervirens
           Edging  Buxus sempervirens ‘Suffruticosa’
           Littleleaf  Buxus microphylla
                  Korean Littleleaf   Buxus microphylla var. koreana
           Truetree   Buxus sempervirens ‘Arborescens’
           Winter Gem  Buxus microphylla var. koreana ‘Winter Gem’
           Wintergreen  Buxus microphylla var. koreana ‘Wintergreen’
Brittlebush
           Brittlebush, Inceinso  Encelia farinosa
Broom
           Lydia  Genista lydia
           Pineapple  Cytisus battandieri
           Scotch  Cytisus scoparius
                  Moonlight Scotch Broom  Cytisus scoparius ‘Moonlight’
           Silkyleaf   Genista pilosa
           Silver   Adenocarpus decorticans
Buckbrush
           Buckbrush  Ceanothus sanguineus
           Buckbrush, Coralberry, Indiancurrant Coralberry  Symphoricarpos orbiculatus
           Common or Narrowleaf  Ceanothus cuneatus
Buckeye
           Bottlebrush  Aesculus parviflora
           California  Aesculus californica
           Georgia, Painted  Aesculus sylvatica
           Ohio, Fetid  Aesculus glabra
           Painted, Georgia  Aesculus sylvatica
           Red, Red-flowering  Aesculus pavia
           Texas, White  Aesculus glabra var. arguta  (syn. Aesculus arguta)
           Yellow, Sweet  Aesculus flava  (syn. Aesculus octandra)
Buckthorn
           Alder, Glossy, Elder  Rhamnus frangula
                  Asplinifolia  Rhamnus frangula ‘Asplenifolia’
           California, Coffeeberry  Rhamnus californica
           Cascara Buckthron, Cascara, Chittam  Rhamnus purshiana
           Sea   Hippophae rhamnoides
           Woolly-buckthorn, False-buckthorn, Southern-buckthorn  Bumelia lanuginoisia   (syn. Sideroxylon lanuginosum).
Buffaloberry
           Russet, Canadian  Shepherdia canadensis
           Silver, Thorny  Shepherdia argentea
Bugle
           Carpet Bugle   Ajuga reptans
Bugloss
           Siberian   Brunnera macrophylla
Bullbay
           Bullbay, Southern Magnolia   Magnolia grandiflora
Bumelia
           Gum    Bumelia lanuginosia  (syn. Sideroxylon lanuginosum)
Bunchberry
           Bunchberry   Cornus canadensis
Burning Bush
           Burning Bush, Compact Winged Euonymus   Euonymus alatus ‘Compactus’
Busy Lizzie
           Busy Lizzie, Impatiens   Impatiens walleriana
Butterfly Bush    (Buddleia, Buddleja)
           Butterfly Bush  Buddleia davidii
           Orange Butterfly Bush, Orange Ball Tree   Buddleia globosa
           Sungold Butterfly Bush   Buddleia × weyeriana ‘Sungold’
Butternut
           Butternut   Juglans cinerea
Buttonbush
           Buttonbush, Honey Bells, Button Willow, Globe Flower  Cephalanthus occidentalis
California Bay
            California Bay, Oregon Myrtle   Umbellularia californica
Camellia
           Japanese   Camellia japonica
           Sasanqua   Camellia sasanqua
Camphor
           Tree, Laurel  Cinnamomum camphora
Candytuft
           Evergreen Candytuft  Iberis sempervirens
           Evergreen Candytuft   Iberis sempervirens  (Herbaceous Ornamental Plants)
Carob
           Carob, St. John's Bread  Ceratonia siliqua
Carpet Bugle
           Carpet Bugle  Ajuga reptans
Carolina Allspice
           Carolina Allspice, Common Sweetbush  Calycanthus floridus
Cascara
           Cascara, Cascara Buckthron, Chittam  Rhamnus purshiana
Caragana
           See Caragana, Peashrub  Caragana
Cardinal Flower
            Cardinal Flower   Lobelia cardinalis
Catalpa
            Northern, Western   Catalpa speciosa
            Purple  Catalpa × erubescens ‘Purpurea’
            Southern, Eastern   Catalpa bignonioides
Ceanothus
           Blue Blossom  Ceanothus thyrsiflorus
           Carmel Creeper  Ceanothus griseus var. horizontalis
           Centennial  Ceanothus 'Centennial'
           Concha  Ceanothus 'Concha'
           Deer Brush  Ceanothus integerrimus
           El Dorado  Ceanothus 'El Dorado'
           Henri Desfosse  Ceanothus ×delilianus ‘Henri Desfosse’
           Monterey  Ceanothus cuneatus var. rigidus
           Point Reyes   Ceanothus gloriosus
           Redstem  Ceanothus sanguineus
           Santa Barbara   Ceanothus impressus
           Snowball  Ceanothus cuneatus var. rigidus ‘Snowball’   (syn. Ceanothus rigidus ‘Snowball’)
           Shiny-leaved  Ceanothus velutinus  (Also, Snowbrush, Cinnamon Bush, Tobacco Bush, Geasewood, Soapwood)
           Wedgleaf  Ceanothus cuneatus  (Also, Common or Narrowleaf Buckbrush)
           Yankee Pont  Ceanothus griseus var. horizontalis 'Yankee Point'
Cedar
           Atlas  Cedrus atlantica (syn. Cedrus libani subsp. atlantica)
                  Blue Atlas  Cedrus atlantica ‘Glauca’ (syn. Cedrus libani subsp. atlantica ‘Glauca’)
                 Weeping Blue Atlas  Cedrus atlantica ‘Glauca Pendula’
           Cedar of Lebanon  Cedrus libani
           Alaska, Yellow  Chamaecyparis nootkatensis  (syn. Xanthocyparis nootkatensis)
                 Aurea  Chamaecyparis nootkatensis ‘Aurea’
                 Strict Weeping  Chamaecyparis nootkatensis ‘Strict Weeping’
                 Weeping  Chamaecyparis nootkatensis ‘Pendula’
           Atlantic Whitecedar  Chamaecyparis thyoides   (syn. White)
           Blue Atlas  Cedrus atlantica ‘Glauca’ (syn. Cedrus libani subsp. atlantica ‘Glauca’)
                 Weeping  Cedrus atlantica ‘Glauca Pendula’
           Brevifolia  Cedrus libani subsp. brevifolia  (syn. Cedrus libani 'Brevifolia')
           Cypress, Cyprian  Cedrus libani subsp. brevifolia
           Deerhorn  Thujopsis dolabrata
           Deodar  Cedrus deodora
                  Aurea, Golden  Cedrus deodora ‘Aurea’
                  Feelin' Blue  Cedrus deodora ‘Feelin' Blue’
                  Gold Cascade  Cedrus deodora ‘Gold Cascade’
                  Golden Horizon  Cedrus deodora ‘Golden Horizon’
                  Mylor  Cedrus deodora ‘Mylor’
           Eastern Redcedar  Juniperus virginiana
           Elkhorn  Thujopsis dolabrata
                  Dwarf Elkhorn  Thujopsis dolabrata ‘Nana’
           Formosan  Taiwania cryptomerioides
           Green Prince  Cedrus libani 'Green Prince'  (syn. Green Prince Cedar of Lebanon)
           Incense  Calocedrus decurrens
                  Maupin Glow  Calocedrus decurrens ‘Maupin Glow’
           Japanese   Cryptomeria japonica
           Plume, Plume Cryptomeria   Cryptomeria japonica ‘Elegans’
           Port Orford, Lawson Falsecypress   Chamaecyparis lawsoniana
           Stenocoma  Cedrus libani 'Stenocoma'
           Western Red  Thuja plicata
           Yellow, Alaska  Chamaecyparis nootkatensis
           White  Chamaecyparis thyoides   (syn. Atlantic Whitecedar)
Chaste Tree
           Chaste Tree, Chastetree  Vitex agnus-castus
Cherry
           Accolade   Prunus ‘Accolade’
           Akebono Yoshino   Prunus × yedoensis ‘Akebono’
           Amur  Prunus maackii
           Autumn Flowering Higan   Prunus subhirtella var. autumnalis
           Birchbark, Paperbark  Prunus serrula
           Bird, Birdcherry (European)  Prunus paduus
           Bitter  Prunus emarginata
           Cascade Snow  Prunus Cascade Snow™   (syn. P. × yedoensis Cascade Snow™; Prunus ‘Berry’)
           Double Weeping Higan  Prunus subhirtella ‘Yae-shidare-higan’
           Dream Catcher  Prunus ‘Dream Catcher’
           European Dwarf or Ground, Mongolian, Steppe  Prunus fruticosa
           Frist Lady  Prunus ‘First Lady’
           Higan Cherry  Prunus subhirtella
                  Autumn Flowering Higan  Prunus subhirtella var. autumnalis
                  Double Weeping Higan  Prunus subhirtella ‘Yae-shidare-higan’
                  Weeping Higan  Prunus subhirtella ‘Pendula’
                  Whitcomb Flowering Higan  Prunus subhirtella ‘Whitcomb’
                  Yae-shedaare Higan  Prunus subhirtella ‘Yae-shidare-higan’
           Hollyleaf   Prunus ilicifolia
           Japanese Flowering Cherry   Prunus serrulata
                  Kanzan or Kwansan  Prunus serrulata ‘Kansan’   (syn.  ‘Kwansan’)
                  Mt. Fuji   Prunus serrulata ‘Mt. Fuji’
                  Royal Burgundy Prunus serrulata ‘Royal Burgundy’
                  Shiro-fugen    Prunus serrulata ‘Shiro-fugen’
                  Tai Haku  Prunus ‘Tai Haku’
                  Ukon   Prunus serrulata ‘Ukon’
           Manchurian  Prunus maackii
           Mongolian, European Dwarf or Ground, Steppe  Prunus fruticosa
           Okame  Prunus ‘Okame’
           Paperbark, Birchbark  Prunus serrula
           Sand, Western Sand  Prunus besseyi
           Sandcherry (Purpleleaf, Redleaf or Cistena)  Prunus × cistena
           Sargent  Prunus sargentii
                  Columnar  Prunus sargentii ‘Columnaris’
           Snow Fountains ('Snofzam')  Prunus Snow Fountains®
           Snow Goose  Prunus ’Snow Goose’  (syn. Prunus subhirtella ‘Snow Goose’)
           Steppe, European Dwarf, European Ground, Mongolian  Prunus fruticosa
           Tai Haku  Prunus ‘Tai Haku’
           Weeping Higan   Prunus subhirtella ‘Pendula’
           Whitcomb Flowering Higan   Prunus subhirtella ‘Whitcomb’
           Yae-shedaare Higan  Prunus subhirtella ‘Yae-shidare-higan’
           Yoshino   Prunus × yedoensis
Cherrylaurel, Cherry-laurel
           Carolina Cherrylaurel, American Cherrylaurel  Prunus caroliniana
           Cherrylaurel, English Cherrylaurel  Prunus laurocerasus
Chestnut
           American  Castanea dentata
           Chinese  Castanea mollissima
           European, Sweet, Spanish  Castanea sativa

Chinese Stranvaesia   see  Photinia davidiana

Chinkapin, Chinquapin
           Golden  Chrysolepis chrysophylla
Chitalpa
           Pink Dawn Chitalpa   Chitalpa tashkentensis ‘Pink Dawn’
Chittamwood (Chittimwood)
           (American Smoketree)   Cotinus obovatus
           (Gum Bumelia, Woolly-buckthorn)   Bumelia lanuginosia
Chokeberry
           Black  Aronia melanocarpa
           Red  Aronia arbutifolia
                  Brilliant Red  Aronia arbutifolia ‘Brilliantissima’
Chokecherry
           Amur  Prunus maackii
           Canada Red (Schubert, Shubert)  Prunus virginiana 'Canada Red'
           Common  Prunus virginiana
           Western  Prunus virginiana var. demissa
Cinquefoil
            Bush Cinquefoil  Potentilla fruticosa
Clematis    (Clematis)  (syn. Virginsbower)
           Anemone  Clematis montana var. rubens
           Evergreen  Clematis armandii
           Fern-leaved  Clematis cirrhosa var. balearica
           Golden  Clematis tangutica
           Hybrid   Clematis   hybrid
           Leatherleaf, Sweet Autumn, Japanese  Clematis terniflora
           Italian  Clematis viticella
           Japanese, Leatherleaf, Sweet Autumn  Clematis terniflora
           Sweet Autumn (Sweet Autumn Virginsbower)  Clematis terniflora
Coffeeberry
           Coffeeberry, California Coffeeberry, California Buckthorn  Rhamnus californica
Coffeetree
           Kentucky Coffeetree   Gymnocladus dioicus
Columbine
           Hybrid   Aquilegia × hybrida
Cone Flower
           Orange  (Black-eyed Susan)   Rudbeckia fulgida
           Purple   Echinacea purpurea
Coral Bells
           Coral Bells   Heuchera spp.
Coralberry (also see Snowberry)
           Coralberry, Indiancurrant Coralberry  Symphoricarpos orbiculatus
           Doorenbos  Symphoricarpos × doorenbosii
                  Magic Berry  Symphoricarpos × doorenbosii ‘Magic Berry’
Coreopsis
           Coreopsis   Coreopsis grandiflora
           Thread Leaf   Coreopsis verticillata
                  Moonbeam   Coreopsis verticillata 'Moonbeam'
Corktree
           Amur Corktree  Phellodendron amurense
           Chinese Corktree, Chinese Phellodendron  Phellodendron chinensis
           Sakhalin Corktree, Sakhalin Phellodendron  Phellodendron chinensis
Corneliancherry
           Corneliancherry    Cornus mas
Cornflower
           Perennial   Centaurea montana
Corylopsis
           Corylopsis    Corylopsis spp.
Cotoneaster   (Cotoneaster)
           Autumn Fire   Cotoneaster salicifolius ‘Autumn Fire’
           Bearberry  Cotoneaster dammeri
           European   Cotoneaster integerrimus
           Franchet   Cotoneaster franchetii
           Hedge  Cotoneaster lucidus
           Hollyberry  Cotoneaster bullatus
           Littleleaf   Cotoneaster microphyllus
           Many-flowered   Cotoneaster multiflorus
           Parney  Cotoneaster lacteus
           Pyrenees  Cotoneaster congestus
           Rockspray   Cotoneaster horizontalis
           Simons  Cotoneaster simonsii
           Spreading  Cotoneaster divaricatus
           Tom Thumb  Cotoneaster apiculatus ‘Tom Thumb’  also given as C. adpressus ‘Tom Thumb’
           Willowleaf   Cotoneaster salicifolius
Cottonwood
           Black  Populus trichocarpa
           Eastern  Populus deltoides
           Fremont  Populus fremontii
           Narrowleaf, Mountain  Populus angustifolia
           Western  Populus fremontii
Cowberry
           Cowberry, Lingonberry   Vaccinium vitis-idaea
Coyote Bush
           Coyote Bush  Baccharis pilularis
Crabapple  (Malus)
           Carmine   Malus × atrosanguinea
           Japanese Flowering   Malus floribunda
           Pigmy  Malus sargentii
           Prairifire   Malus ‘Prairifire’
           Sargent   Malus sargentii
           Snowdrift  Malus ‘Snowdrift’
           Tea   Malus hupehensis
           Western, Pacific, Oregon  Malus fusca
Cranberry
           Cranberry, American Cranberry  Vaccinium macrocarpon
Cranberrybush   see Viburnum
Cranesbill
           Bloody   Geranium ssp.
Crape Myrtle  (Lagerstroemia)
           Asian, Malayan, Thai   Lagerstroemia floribunda
           Common   Lagerstroemia indica
                   Petite Plum  Lagerstroemia indica Petite Plum®
           Fauri   Lagerstroemia fauriei
           Hybrid   Lagerstroemia hybrid
                   Acoma  Lagerstroemia ‘Acoma’
                  Zuni  Lagerstroemia ‘Zuni’
           Japanese   Lagerstroemia fauriei
Creeper
           Crinkle-leaf   Rubus calycinoides  (syn. Rubus pentalobus))
           Virginia    Parthenocissus quinquefolia
Creosote Bush
           Creosote Bush  Larrea tridentata
Crimson Glory Vine
           Crimson Glory Vine  Vitis coignetiae
Crocus
           Crosus spp.
Cryptomeria
           Japanese Cryptomeria, Japanese Cedar   Cryptomeria japonica
           Plume Cryptomeria, Plume Cedar   Cryptomeria japonica ‘Elegans’
Currant
           Chaparral  Ribes malvaceum
           Flowering  Ribes sanguineum
                  Elk River Red  Ribes sanguineum ‘Elk River Red’
                  Pokey's Pink  Ribes sanguineum ‘Pokey's Pink’
                  White Icicle  Ribes sanguineum ‘White Icicle’
           Golden, Buffalo  Ribes aureum
           Golden, Missoui, Clove  Ribes odoratum   (R. aureum var. villosum)
           Gordon's  Ribes × gordonianum
           Mountain Pink, Sierra, Pink Sierra  Ribes nevadese
           Wax  Ribes cereum
Custard Apple
           Custard Apple, Common Pawpaw  Asimina triloba
Cypress
           Alumii  Chamaecyparis lawsoniana ‘Alumii’
           Arizona  Cupressus arizonica   see Smooth Arizona  Cupressus glabra
           Baker, Modoc  Cupressus bakeri
           Bald  Taxodium distichum
           Blue Ice  Cupressus glabra ‘Blue Ice’
           Blue Spire  Cupressus glabra ‘Blue Spire’
           Blue Swirl  Cupressus lusitanica ‘Blue Swirl’
           Ellwood   Chamaecyparis lawsoniana ‘Ellwoodii’
           Golden Pillar  Cupressus macrocarpa ‘Golden Pillar’
           Italian, Mediterranean  Cupressus sempervirens
                  Stricta  Cupressus sempervirens ‘Stricta’
                  Swain's Golden  Cupressus sempervirens ‘Swane's Golden’
                  Tiny Tower  Cupressus sempervirens Tiny Tower™
           Karoonda  Cupressus macrocarpa ‘Karoonda’
           Leyland  ×Cupressocyparis leylandii
                  Emerald Isle  ×Cupressocyparis leylandii Emerald Isle®  (‘Moncal’)
                  Golconda  ×Cupressocyparis leylandii ‘Golconda’
           Mediterranean, Italian  Cupressus sempervirens
           Mexican  Cupressus lusitanica
           Monterey  Cupressus macrocarpa
                  Golden Pillar  Cupressus macrocarpa ‘Golden Pillar’
                  Karoonda  Cupressus macrocarpa ‘Karoonda’
                  Wilma Goldcrest  Cupressus macrocarpa ‘Wilma Goldcrest’
           Pond  Taxodium ascendens
           Raywood's Weeping  Cupressus glabra ‘Raywood's Weeping’
           Saharan, Tassili   Cupressus dupreziana
           Scarab    Chamaecyparis lawsoniana ‘Alumii’
           Siberian Cypress, Russian Arborvitae  Microbiota decussata
           Smooth Arizona  Cupressus glabra    (syn. Cupressus arizonica var. glabra)
                  Blue Ice  Cupressus glabra ‘Blue Ice’
                  Blue Spire  Cupressus glabra ‘Blue Spire’
                  Chaparral  Cupressus glabra ‘Chaparral’
                  Raywood's Weeping  Cupressus glabra ‘Raywood's Weeping’
                  Sulphuera, Sulfurea  Cupressus glabra ‘Sulphurea’ or ;‘Sulfurea’
           Sulphuera, Sulfurea  Cupressus glabra ‘Sulphurea’ or ;‘Sulfurea’
           Swain's Golden  Cupressus sempervirens ‘Swane's Golden’
           Tassili, Saharan  Cupressus dupreziana
           Tiny Tower  Cupressus sempervirens Tiny Tower™
           White  Chamaecyparis thyoides   (syn. Atlantic Whitecedar)
           Wilma Goldcrest  Cupressus macrocarpa ‘Wilma Goldcrest’
Daffodil
           Daffodil   Narcissus ssp.
Dahlia
           Dahlia   Dahlia ssp.
Daisy Bush
           Daisy Bush  Brachyglottis greyi
           Daisy Bush, New Zealand Holly  Olearia macrodonta
Daphne   (Daphne)
           Burkwood   Daphne × burkwoodii
                  ‘Briggs Moonlight’  Daphne × burkwoodii ‘Briggs Moonlight’
                  ‘Carol Mackie’  Daphne × burkwoodii ‘Carol Mackie’
           Caucasian   Daphne caucasica
           False   Daphniphyllum macropodum
           February    Daphne mezereum
           Fragrant   Daphne odora
                  Variegated Fragrant  Daphne odora ‘Marginata’
           Garland  Daphne cneorum
           Lawrence Crocker   Daphne 'Lawrence Crocker'
           Lilac   Daphne genkwa
           Rock, Rose   Daphne cneorum
           Spurge Laurel  Daphne laureola
Daylily
           Daylily   Hemerocallis spp.
Dead Nettle
           Spotted   Lamium maculatum
Deer Brush
           Deer Brush   Ceanothus integerrimus
Delphinium
           Delphiniium   Delphinium elatum
Desert Holly
           Desert Holly  Atriplex hymenelytra
Desert Rose
           Desert Rose, Desert Azalea   Adenium obesum
Desert Willow
           Desert Willow   Chilopsis linearis
Deutzia   (Deutzia)
           Fuzzy   Deutzia scabra ‘Flore-pleno’
           Kalmia Flowered  Deutzia × kalmiiflora
           Lemoine   Deutzia × lemoinei
           Slender   Deutzia gracilis
                  Nikko Slender  Deutzia gracilis ‘Nikko’
Devil's Club
           Devil's Club  Oplopanax horridum
Dewberry
           Dewberry, also California, Trailing, Pacific, or Western Blackberry  Rubus ursinus
Dogwood      (Cornus)
           Bloodtwig  Cornus sanguinea
                  Midwinter Fire  Cornus sanguinea 'Midwinter Fire'
           Bunchberry  Cornus canadensis
           Corneliancherry   Cornus mas
                  Japanese   Conus officinalis (also, Korean and Chinese)
           Evergreen, Bentham's Cornel  Cornus capitata
           Flowering   Cornus florida
                  Gold Nugget  Cornus florida 'Gold Nugget'
                  Tricolor, Welch  Cornus florida 'Welchii'
           Giant  Cornus controversa
                  June Snow  Cornus controversa 'June Snow'
           Golden Twig  Cornus sericea ‘Flaviramea’
           Gray  Cornus racemosa
           Hybrid Flowering/Kousa  Cornus florida  ×Cornus kousa  (syn. Cornus × rutgersensis)
           Japanese Cornel (also Korean and Chinese)   Cornus officinalis
           Kousa  Cornus kousa
                  Gold Star  Cornus kousa 'Gold Star'
                  Radiant Star  Cornus kousa 'Radiant Star'
                  Sunsplash  Cornus kousa 'Sunsplash'
           Pacific, Western   Cornus nuttallii
                  Eddiei, Goldspot  Cornus nuttallii 'Eddiei' (syn. 'Goldspot')
           Pagoda  Cornus alternifolia
           Redosier  Cornus sericea
                  Kelsey  Conus sericea ‘Kelseyi’
           Rough-leaved  Cornus drummondii
           Starlight  Cornus Starlight^® 
           Tatarian, Tartarian   Cornus alba
                   Ivory Halo™, (syn. ‘Baihalo’)  Cornus alba Ivory Halo™
                   Variegated Tatarian  Cornus alba ‘ Argenteo-marginata’
                   Variegated Tatarian  Cornus alba ‘ Elegantissima’
Douglas-fir
            Bigcone Douglas-fir  Pseudotsuga macrocarpa
            Douglas-fir  Pseudotsuga menziesii
                   Graceful Grace  Pseudotsuga menziesii  ‘Graceful Grace’
                   Vail  Pseudotsuga menziesii  ‘Vail’
           Rocky Mountain or Interior Douglas-fir  Pseudotsuga menziesii var. glauca
           Taiwan Douglas-fir  Pseudotsuga wilsoniana
Dove Tree
           Dove Tree   Davidia involucrata
Elaeagnus  (Elaeagnus)
           Autumn (Autumn Olive)  Elaeagnus umbellata
           Ebbinge’s   Elaeagnus ebbingei
                   Gilt Edge Elaeagnus/Silverberry/  Elaeagnus × ebbingei ‘Gilt Edge’
           Thorny   Elaeagnus pungens
                   Maculata  Elaeagnus pungens ‘Maculata’
Elderberry or Elder  (Sambucus)
           American  Sambucus canadensis
           Black, Common, European  Sambucus nigra
           Blue  Sambucus caerulea  (syn. S. cerulea, S. mexicana)
           Red  Sambucus racemosa
Elm  (Ulmus)
           Accolade  Ulmus Accolade™
           American  Ulmus americana
           Hakkaido Dwarf  Ulmus parvifolia ‘Hokkaido’
           Dutch, Hybrid  Ulmus × hollandica
           Frontier  Ulmus ‘Frontier’
           Homestead  Ulmus ‘Homestead ’
           Scotch  Ulmus glabra
                  Camperdown Scotch  Ulmus glabra ‘Caperdownii’
           Lacebark, Chinese  Ulmus parvifolia
                   Frosty or Variegated Lacebark or Chinese  Ulmus parvifolia  ‘Frosty’
                   Hakkaido Dwarf  Ulmus parvifolia ‘Hokkaido’
                   Seiju Dwarf  Ulmus parvifolia ‘Seiju’
           Siberian   Ulmus pumila
Empress Tree
           Empress Tree, Royal Paulownia   Paulownia tomentosa
Enkianthus
           Redvein Enkianthus   Enkianthus campanulatus
Epaulette Tree
           Epaulette, Fragrant Epaulette  Pterostyrax hispida
Escallonia   (Escallonia)
           Pink Escallonia  Escallonia laevis
                  Gold Brian  Escallonia laevis ‘Gold Brian’
           Langley Escallonia  Escallonia × langleyensis
                  Apple Blossom  Escallonia × langleyensis ‘Apple Blossom’
                  Pride of Donard  Escallonia × langleyensis ‘Pride of Donard’
Eucalyptus   see Gum or the genus (Eucalyptus)
Euonymus   (Euonymus)
           American, Strawberry Bush, Hearts-a-Burstin'  Euonymus americanus
           Box  Euonymus japonicus ‘Microphyllus’
                   Butterscotch   Euonymus japonicus ‘Microphyllus Butterscotch’
                   Variegated    Euonymus japonicus ‘Microphyllus Variegata’
           Compact Winged, Burning Bush  Euonymus alatus ‘Compactus’
           European, Common Spindle Tree  Euonymus europaeus
           Japanese   Euonymus japonicus
                   Variegated   Euonymus japonicus
           Spreading  Euonymus kiautschovicus
                  Manhattan  Euonymus kiautschovicus ‘Manhattan’
           Wintercreeper  Euonymus fortunei
                   Coloratus  Euonymus fortunei var. coloratus
                   Emerald Cushion  Euonymus fortunei 'Emerald Cushion'
                   Emerald Gaiety  Euonymus fortunei 'Emerald Gaiety'
                   Ivory Jade  Euonymus fortunei 'Ivory Jade'
                   Kewensis  Euonymus fortunei 'Kewensis'
                   Moon Shadow  Euonymus fortunei 'Moon Shadow'
                   Silver Queen  Euonymus fortunei 'Silver Queen'
                   Sparkle n' Gold  Euonymus fortunei 'Sparkle n' Gold'
                   Wolong Ghost  Euonymus fortunei 'Wolong Ghost'
Evodia
           Korean, Beebee Tree  Tetradium daniellii, syn. Evodia daniellii
Falsecypress
           Alumii, Allumii, Scarab Cypress  Chamaecyparis lawsoniana ‘Alumii’
           Ellwood  Chamaecyparis lawsoniana ‘Ellwoodii’
           Golden Showers  Chamaecyparis lawsoniana ‘Golden Showers’
           Hinoki  Chamaecyparis obtusa
                      Slender  Chamaecyparis obtusa ‘Gracilis’
                      (dwarf/compact forms)  Chamaecyparis obtusa  (dwarf forms)
           Lawson, Port Orford Cedar  Chamaecyparis lawsoniana
                  Alumii, Allumii, Scarab Cypress  Chamaecyparis lawsoniana ‘Alumii’
                  Blue Surprise  Chamaecyparis lawsoniana ‘Blue Surprise’
                  Dik's Weeping  Chamaecyparis lawsoniana ‘Dik's Weeping’
                  Duncan's  Chamaecyparis lawsoniana ‘Duncanii’
                  Ellwood  Chamaecyparis lawsoniana ‘Ellwoodii’
                  Golden Showers  Chamaecyparis lawsoniana ‘Golden Showers’
                  Green Globe  Chamaecyparis lawsoniana ‘Green Globe’
                  Miki  Chamaecyparis lawsoniana ‘Miki’
                  Scarab Cypress, Alumii, Allumii  Chamaecyparis lawsoniana ‘Alumii’
                  Treasure  Chamaecyparis lawsoniana ‘Treasure’
                  Treasure Island  Chamaecyparis lawsoniana ‘Treasure Island’
           Moss  Chamaecyparis pisifera ‘Squarrosa’
           Nootka  Chamaecyparis nootkatensis [Alaska Cedar or Yellow Cedar]  (syn. Xanthocyparis nootkatensis)
           Sawara  Chamaecyparis pisifera
                  Boulevard  Chamaecyparis pisifera ‘Boulevard’
                  Curly Tops  Chamaecyparis pisifera ‘Curly Tops’
                  Threadleaf  Chamaecyparis pisifera ‘Filifera’
                      Dwarf   Chamaecyparis pisifera‘Filifera Nana’
                      Golden   Chamaecyparis pisifera ‘Filifera Aurea’
                      Lemon Thread  Chamaecyparis pisifera ‘Lemon Thread’
                  Plumosa  Chamaecyparis pisifera ‘Plumosa’
                  Sungold  Chamaecyparis pisifera ‘Sungold’
           Whitecedar   Chamaecyparis thyoides   (syn. Atlantic Whitecedar, White Cedar)
False Solomon's Seal
           False Solomon's Seal   Smilacina racemosa
Fatshedera
           Fatshedera    × Fatshedera lizei
Fatsia
           Japanese Fatsia  Fatsia japonica
                   Variegated  Fatsia japonica 'Variegata'
Feijoa
           Feijoa, Pineapple Guava  Feijoa sellowiana
Fern
           Swordfern    Polystichum munitum
Fescue
           Blue   Festuca cinerea
Filbert      also see Hazel and Hazelnut
           Contorted Filbert, Harry Lauder's Walking Stick  Corylus avellana ‘Contorta’
           European Filbert, Hazelnut  Corylus avellana
           Turkish Filbert  Corylus colurna
Fir
           Balsam  Abies balsamea
                  Dwarf Balsam   Abies balsamea‘Nana’
           California Red   Abies magnifica
                   Dwarf Blue California Red  Abies magnifica ‘Nana’
           China  Cunninghamia lanceolata
                  Blue China  Cunninghamia lanceolata ‘Glauca’
           Delavay's   Abies delavayi
           Douglas-fir   Pseudotsuga menziesii
           Grand  Abies grandis
                  Johonson Grand  Abies grandis ‘Johnsonii’
           Himalayan (West)  Abies pindrow
           Korean   Abies koreana
                   Golden  Abies koreana ‘Aurea’
                   Horstmann's Silberlocke  Abies koreana ‘Horstmann's Silberlocke’
                   Silver Show  Abies koreana ‘Silver Show
           Moroccan   Abies pinsapo var. marcorana   (syn. Abies marcorana)
           Noble   Abies procera
                   Glauca Prostrata Noble  Abies procera ‘Glauca Prostrata’
           Nordmann, Caucasian   Abies nordmanniana
                  Golden Spreader   Abies nordmanniana ‘Golden Spreader’
           Silver (Pacific)  Abies amabilis
           Spanish  Abies pinsapo
                   Aurea Spanish, Golden Spanish  Abies pinsapo ‘Aurea’
                   Blue Spanish, Glauca Spanish  Abies pinsapo ‘Glauca’
                   Moroccan  Abies pinsapo var. marcorana
           Subalpine, Rocky Mountain  Abies lasiocarpa
           West Himalayan  Abies pindrow
           White  Abies concolor
                  Blue Cloak  Abies concolor ‘Blue Cloak’
                  Candicans White   Abies concolor ‘Candicans’
Firethorn (Pyracantha)
           Formosan  Pyracantha koidzumii
           Scarlet  Pyracantha coccinea
Flannel Bush
           Flannel Bush  Fremontodendron spp.
Foam Flower
           Foam Flower   Tiarella cordifolia
Forget-me-not
           Siberian   Brunnera macrophylla
           Woodland   Myosotis sylvatica
Forsythia
           Border   Forsythia × intermedia
           Broxensis Greenstem   Forsythia viridissim 'Bronxensis'
           White   Abeliophyllum distichum
Fothergilla  (Fothergilla)
           Dwarf  Fothergilla gardenii
           Large  Fothergilla major   (now includes those previously known as F. monticola, Alabama Fothergilla)
Fountain Grass
           Fountain Grass   Pennisetum alopecuroides
Fox Glove
           Common   Digitalis purpurea
Franklin Tree
           Franklin Tree  Franklinia alatamaha
Fremontia
           Fremontodendron  Fremontodendron
Fringe-flower
           Chinese  Loropetalum chinense
                      Pink-flowering (Chinese)  Loropetalum chinense var. rubrum
Fringetree   (Chionanthus)
           Chinese  Chionanthus retusus
           White  Chionanthus virginicus
Fuchsia
           Magellan, Hardy  Fuchsia magellanica
Geum
           Geum   Geum hybrids
Ginkgo
           Ginkgo, Maidenhair Tree   Ginkgo biloba
Globe Thistle
            Veitch’s Blue Globe Thistle  Echinops ritro ‘Veitch’s Blue’
Glorybower
           Harlequin   Clerodendrum trichotomum
Glory Bush
           Glory Bush, Pincess Flower, Lasiandra  Tibouchina urvilleana
Glory Vine
           Crimson   Vitis coignetiae
Gold Dust Plant
           Gold Dust Plant   Aucuba japonica ‘Variegata’
Goldenchain Tree
           Goldenchain Tree   Laburnum × watereri
Golden Raintree
           Golden Raintree  Koelreuteria paniculata
                  Upright Golden Raintree  Koelreuteria paniculata ‘Fastigiata’
Gorse
           Common Gorse   Ulex europaeus
Grape Holly, Oregon
           Oregon Grape Holly, Oregon Grape   Mahonia aquifolium   (Berberis aquifolium)
Grape Hyacinth
           Grape Hyacinth   Muscaria armeniacum
Grevillea  (Grevillea)
           Holly   Grevillea aquifolium
           Rosemary   Grevillea rosmarinifolia
           Royal   Grevillea victoriae
           Silky Oak   Grevillea robusta
           Woolly Grevillea  Grevillea lanigera
                  Coastal Gem  Grevillea lanigera
Greasewood
           Greasewood, Narrowleaf Buckbrush, Wedgeleaf Ceanothus  Ceanothus cuneatus
Guava
           Pineapple Guava, Feijoa  Feijoa sellowiana
Gum   (Eucalyptus)
           Blakely's Red, Forest Red  Eucalyptus blakelyi
           Omeo  Eucalyptus neglecta
           Narrow-leaved Peppermint, Willow-leaved Peppermint  Eucalyptus nicholii
           Silver Dollar, (Argyle Apple)  Eucalyptus cinerea
           Small Leaved, Small-leaved, Kybean  Eucalyptus parvula   (syn. Eucalyptus parvifolia)
           Snow, Alpine Snow  Eucalyptus pauciflora ssp. niphophila
           Swamp, Swamp Peppermint  Eucalyptus rodwayi
           Urn  Eucalyptus urnigera
           Willow-leaved Peppermint, Narrow-leaved Peppermint  Eucalyptus nicholii
Gutta-percha Tree
           Gutta-percha or Hardy Rubber Tree  Eucommia ulmoides
Hackberry   (Celtis)
           Common  Celtis occidentalis
           Desert  Celtis pallida
           Netleaf, Western  Celtis reticulata
           Spiny  Celtis pallida
Hakea   (Hakea)
           Small-fruited  Hakea microcarpa
Hardy Rubber Tree
           Hardy Rubber or Gutta-percha Tree  Eucommia ulmoides
Hawthorn   (Crataegus)
           Autumn Glory  Crataegus ‘Autumn Glory’
           Cockspur  Crataegus crus-galli
           Columnbia  Crataegus columbiana
           Common, English  Crataegus monogyna
           Contorted  Crataegus monogyna 'Flexuosa'
           Crimson Cloud  Crataegus laevigata Crimson Cloud^TM
           Dotted  Crataegus punctata
           Douglas, Black  Crataegus douglasii
           English, English Midland  Crataegus laevigata
           English, Common  Crataegus monogyna
           Green, Southern  Crataegus viridis
           Indian,  seeRhaphiolepis, esp. Rhaphiolepis indica  
           Indian  Rhaphiolepis indica
           Lavalle  Crataegus × lavallei
           Paul's Scarlet  Crataegus laevigata ‘Paul's Scarlet’
           Russian  Crataegus ambigua
           Singleseed  Crataegus monogyna
                  Contorted Singleseed  Crataegus monogyna 'Flexuosa'
           Washington  Crataegus phaenopyrum
           Winter King  Crataegus viridis 'Winter King'
Hazel
           American Hazel, Hazelnut or Filbert  Corylus americanan
           Chinese  Corylus chinensis
           Redbud  Disanthus cercidifolius
           Turkish  Corylus chinensis
           Winter  Corylopis
           Western, California  Corylus cornuta var. californica
Hazelnut
           American Filbert, Hazelnut, or Hazel  Corylus americanan
           Contorted Filbert, Harry Lauder's Walking Stick  Corylus avellana ‘Contorta’
           European Filbert, Hazelnut  Corylus avellana
           Red Dragon   Corylus avellana ‘Red Dragon’
           Rote Zeller   Corylus avellana ‘Rote Zeller’
           Western, California  Corylus cornuta var. californica
Hearts-a-Bursting
           Hearts-a-Burstin', Strawberry Bush, American Euonymus  Euonymus americanus
Heath and Heather
           Darley Heath  Erica × darleyensis
           Irish Heath (Connemara or St. Dabeoc's Heath)  Daboecia
           Spring Heath  Erica carnea
           Scotch or Scots Heather  Calluna vulgaris
                  Firefly  Calluna vulgaris ‘Firefly’
                  Robert Chapman   Calluna vulgaris ‘Robert Chapman’
                  Wickwar Flame  Calluna vulgaris ‘Wickwar Flame’
           Twisted Heath  Erica cinerea
Heavenly Bamboo
           Heavenly Bamboo  Nandina domestica
Hebe
           Emerald Gem, Green Globe  Hebe ‘Emerald Gem’
           Hinerua  Hebe ‘Hinerua’
           Karo Golden Esk  Hebe ‘Karo Golden Esk’
           Patty's Purple Boxleaf Hebe, Patty's Purple Veronica   Hebe ‘Patty's Purple’
           Pagei  Hebe pinguifolia ‘Paegi’
           Traversii   Hebe traversii
           Wiri Joy  Hebe ‘Wiri Joy’
Hellebore
           Hellebore   Helleborus
Hemlock  (Tsuga)
           Canadian  Tsuga canadensis
                  Little Joe  Tsuga canadensis ‘Little Joe’
                  White Tipped  Tsuga canadensis ‘Albospica’
                  Weeping Hemlock  Tsuga canadensis var. pendula
           Mountain   Tsuga mertansiana
                  Elizabeth  Tsuga mertansiana ‘Elizabeth’
           Northern Japanese  Tsuga diversifolia
           Western  Tsuga heterophylla
Hickory      (Carya)
           Pecan  Carya illinoinensis
           Shaglbark  Carya ovata
           Shellbark  Carya laciniosa
Holly      (Ilex)
           California Grape Holly  Mahonia pinnata  syn. Berberis pinnata
           Chinese  Ilex cornuta
                  Burford Chinese   Ilex cornuta ‘Burfordii’
                  Dwarf Chinese   Ilex cornuta ‘Rotunda’
           Desert  Atriplex hymenelytra
           English  Ilex aquifolium
                  Variegated English   Ilex aquifolium ‘Argentea Marginata’
           Gallberry, Inkberry  Ilex glabra
           Inkberry, Gallberry  Ilex glabra
                  Shamrock Inkberry, Shamrock Gallberry  Ilex glabra ‘Shamrock’
           Japanese  Ilex crenata
                  Convex   Ilex crenata ‘Convexa’
                  Dwarf Pagoda   Ilex crenata ‘Dwarf Pagoda’
                  Heller   Ilex crenata ‘Helleri’
                  Lemon Gem   Ilex crenata ‘Lemon Gem’
                  Sky Pencil   Ilex crenata ‘Sky Pencil’
           Lusterleaf    Ilex latifolia
           Meserve Hybrid  Ilex × meserveae
           Michigan  Ilex verticillata
           New Zealand, Daisy Bush  Olearia macrodonta
           Oregon Grape Holly, Oregon Grape   Mahonia aquifolium   aka Berberis aquifolium
           Winterberry  Ilex verticillata
                  Winter Red  Ilex verticillata ‘Winter Red’
Honeylocust
           Honeylocust  Gleditsia triacanthos
                  Thornless   Gleditsia triacanthos var. inermis
                         Sunburst Thornless   Gleditsia triacanthos var. inermis ‘Sunburst’
Honeysuckle
           Box  Lonicera nitida
                  Baggesen's Gold  Lonicera nitida ‘Baggesen's Gold’
                  Red Tips  Lonicera nitida ‘Red Tips’
                  Silver Beauty  Lonicera nitida ‘Silver Beauty’
           Himalaya, Pheasant-eye  Leycesteria formosa
           Privet  Lonicera pileata
           Tatarian  Lonicera tartarica
                  Arnold Red Tatarian  Lonicera tartarica‘Arnold's Red’
           Twinberry, Black Twinberry  Lonicera involucrata
           Western Trumpet  Lonicera ciliosa
           Winter   Lonicera fragrantissima
Hoptree
           California Hoptree   Ptelea crenulata
           Hoptree   Ptelea trifoliata
Hornbeam   (Carpinus)
           American  Carpinus caroliniana
           Korean  Carpinus coreana
           European  Carpinus betulus
                  Pyramidal  Carpinus betulus ‘Fastigiata’
           Hop-Hornbeam (American), Ironwood   Ostrya virginiana
           Japanese  Carpinus japonica
Horsechestnut
           California  Aesculus californica
           Horsechestnut  Aesculus hippocastanum
                  Double, Nutless  Aesculus hippocastanum ‘Baumannii’
           Red Flowering Horsechestnut   Aesculus × carnea
Hosta
           Hosta   Hosta spp.
Huckleberry
           Evergreen, Box  Vaccinium ovatum
           Fool's  (False Azalea, Rusty Manziesia)  Menziesia ferruginea
           Red    Vaccinium parvifolium
Hyacinth
           Grape  Muscari armeniacum
           Hyacinth  Hyacinthus orientalis
Hydrangea  (Hygrangea)
           Climbing   Hygrangea anomala var. petiolaris
           Oakleaf  Hydrangea quercifolia
           Panicle  Hydrangea paniculata
Hypericum
           Creeping St. John’s Wort, Aaron’s Beard      Hypericum calycinum
           Hidcote Hypericum   Hypericum ‘Hidcote’
           Kouytchense Hypericum  Hypericum kouytchense
Iigiri Tree
           Iigiri Tree, Ligiri, Wonder Tree  Idesia polycarpa
Indian Plum
           Indian Plum  Oemleria cerasiformis
Indigo
           Fragrant False, Dwarf Wild  Amorpha nana
Inkberry
           Inkberry, Inkberry Holly, Gallberry  Ilex glabra
Inside-out Flower
           Small  Vancourveria planipetala
Iris
           Bearded   Iris  "Bearded Hybrids"
           Siberian   Iris sibirica
Ironwood
           Ironwood, Hop-Hornbeam (American)   Ostrya virginiana
            Persian, Persian Parrotia  Parrotia persica
Ivy
           Boston, Japanese Parthenocissus   Parthenocissus tricuspidata
           English  Hedera helix
           Tree, Fatshedera  × Fatshedera lizei
Japanese Apricot
         Peggy Clarke Flowering      Prunus mume 'Peggy Clarke"
Japanese Knotweed
           Japanese Knotweed, Mexican Bamboo  Polygonum cuspidatum  (syn. Fallopia japonica)
Japanese Pagodatree
           Japanese Pagodatree, Scholar-tree   Sophora japonica
Japanese Rose
           Japanese Kerria  Kerria japonica
Japanese Spurge
           Japanese Spurge, Pachysandra   Pachysandra terminalis
Jasmine
           Pink  Jasminum polyanthum
           Primrose  Jasminum mesnya  (syn. Jasminum primulinum)
           Star or Confederate  Trachelospermum jasminoides
           Winter  Jasminum nudiflorum   Also Jasminum polyanthum (see Pink)
Jetbead
           Black  Rhodotypos scandens
Joe-Pye Weed
           Joe-Pye Weed, Spotted Joe-Pye Weed   Eupatorium maculatum
Johnny-Jump-Up
           Johnny-Jump-Up   Viola tricolor
Jojoba
           Jojoba, Goatnut  Simmondsia chinensis
Joshua
           Tree  Yucca brevifolia
Judas Tree
           Judas Tree, Mediterranean Redbud, Love Tree  Cercis siliquastrum
Juniper  (Juniperus)
           Alligator  Juniperus deppeana
           Bonin Island, Japanese Garden  Juniperus procumbens
           Canary Island  Juniperus cedrus
           Common  Juniperus communis
                  Compressa   Juniperus communis ‘Compressa’
                  Depressa Aurea  Juniperus communis ‘Depressa Aurea’
                  Pioneer  Juniperus communis ‘Pioneer’
                  Repanda  Juniperus communis ‘Repanda’
           Creeping   Juniperus horizonatils
                   Bar Harbor  Juniperus horizonatils 'Bar Harbor'
                   Gold Strike  Juniperus horizonatils 'Gold Strike'
           Gold Coast  Juniperus chinensis  Gold Coast^TM  (‘Aurea’)
           Golden Flat  Juniperus communis ‘Depressa Aurea’
           Grey Owl   Juniperus ‘Grey Owl’
           Hollywood  Juniperus chinensis ‘Torulosa’
           Japanese Garden  Juniperus procumbens
                  Dwarf Japanese Garden  Juniperus procumbens ‘Nana’
           Keteleeri  Juniperus chinensis ‘Keteleeri’
           Medora  Juniperus scopulorum ‘Medora’
           Oneseed  Juniperus monosperma
           Pfitzer  Juniperus chinensis ‘Pfitzeriana’  (syn. J. × pfitzeriana ‘Wilhelm Pfitzer’,    J. × media ‘Pfitzeriana’)
           Ping  Juniperus pingii
           Pioneer  Juniperus communis ‘Pioneer’
           Rocky Mountain  Juniperus scopulorum
                  Blue Creeper  Juniperus scopulorum Blue Creeper™  (syn. J. s. ‘Monam’)
                  Gray Gleam  Juniperus scopulorum ‘Gray Gleam’
                  Medora  Juniperus scopulorum ‘Medora’
                  Snow Flurries  Juniperus scopulorum ‘Snow Flurries’
                  Wichita Blue  Juniperus scopulorum ‘Wichita Blue’
           Savin  Juniperus sabina
           Shore  Juniperus conferta
           Singledseeded   Juniperus squamata
                  Blue Star    Juniperus squamata ‘Blue Star’
           Tam  Juniperus sabina  ‘Tamariscifolia’
           Western  Juniperus occidentalis
Katsuratree
           Katsuratree   Cercidiphyllum japonicum
           Weeping Katsura   Cercidiphyllum japonicum
Kentucky Coffeetree
           Kentucky Coffeetree  Gymnocladus dioica  (syn. G. dioicus)
Kerria  (Kerria)
           Japanese  Kerria japonica
                 Golden Guinea  Kerria japonica ‘Golden Guinea’
                 Kin Kan  Kerria japonica ‘Kin Kan’
                 Picta (variegated)  Kerria japonica ‘Picta’
                 Double  Kerria japonica ‘Pleniflora’
                 White  Kerria japonica ‘Albiflora’
Kinnikinnik, Kinnikinick
           Kinnikinnik, Kinnikinick, Bearberry  Arctostaphylos uva-ursi
                  Massachusetts  Arctostaphylos uva-ursi ‘Massachusetts’
                  Point Reyes  Arctostaphylos uva-ursi ‘Point Reyes’
                  San Bruno Mountain  Arctostaphylos uva-ursi ‘San Bruno Mountain’
Knotweed
           Japanese, Mexican Bamboo  Polygonum cuspidatum (syn. Fallopia japonica)
                  Variegate Knotweed or Fallopia  Polygonum cuspidatum ‘Variegata’ (syn. Fallopia japonica ‘Variegata’)
Kohuhu     see Pittosporum
Korean Evodia
           Korean Evodia, Beebee Tree  Tetradium daniellii, syn. Evodia daniellii
Lamb's Ears
           Lamb's Ears  Stachys byzantina
Larch  (Larix)
           American (also Tamarack)  Larix laricina
           Eastern (also Tamarack)  Larix laricina
           European  Larix decidua
           Dahurian  Larix gmelinii
                  Romberg Park Dahurian  Larix gmelinii 'Romberg Park'
           Japanese  Larix kaempferi
                  Diana  Larix kaempferi 'Diana'
                  Jacobsen's Pyramid  Larix kaempferi 'Jacobsen's Pyramid'
           Russian, Siberian  Larix russica  (L. sibirica)
           Western (also Tamarack)  Larix occidentalis
                  Bollinger  Larix occidentalis ‘Bollinger’
Laurel
           Australian  Pittosporum
           Bay, True, Turkish  Laurus nobilis
           California, Oregon Myrtle, California Bay  Umbellularia californica
           Carolina Cherry, American Cherry  Prunus caroliniana
           Cherry  Prunus laurocerasus
           English  Prunus laurocerasus
           Marbled Dragon  Prunus laurocerasus  ‘Marbled Dragon’
           Mt. Vernon  Prunus laurocerasus  ‘Mt. Vernon’
           Mountain-laurel   Kalmia latifolia
           Otto Luyken   Prunus laurocerasus  ‘Otto Luyken’
           Portuguese Cherry   Prunus lusitanica
           Sierra (Mountain or Black)  Leucothoe davisiae
           Texas Mountain (Mescal Bean, Frijolito)  Sophora secundiflora
           Spurge  Daphne laureola
           Zabel’s    Prunus laurocerasus  ‘Zabeliana’
Laurustinus
           Laurustinus    Viburnum tinus
Lavender Cotton
           Lavender Cotton, Santolina  Santolina chamaecyparissus
           Lavender Cotton, Santolina  Santolina chamaecyparissus  (Herbaceous Ornamental Plants)
           Green Lavender Cotton, Green Santolina  Santolina virens
Lavatera
           Tree  Lavatera thuringiaca
Leatherwood
           Leatherwood  Dirca palustris
Lemonade Berry
           Lemonade Berry or Sumac  Rhus integrifolia
Leucothoe
           Coastal  Leucothoe axillaris
           Drooping  Leucothoe fontanesiana
           Girard's Rainbow   Leucothoe fontanesiana ‘Girard's Rainbow’
           Sweetbells  Leucothoe racemosa  (syn. Eubotrys racemosa)
           Western  Leucothoe davisiae
Lilac  (Syringa)
           Early Flowering  Syringa × hyacinthiflora
                  Maiden's Blush  Syringa × hyacinthiflora 'Maiden's Blush'
                  Mount Baker  Syringa × hyacinthiflora 'Mount Baker'
           Chinese  Syringa × chinensis
                  Lilac Sunday  Syringa × chinensis ‘Lilac Sunday’
           Chinese Tree, Peking  Syringa pekinensis
           Common  Syringa vulgaris
                  See    Syringa vulgaris  for a number of selections.
           Cutleaf  Syringa laciniate
           Hungarian  Syringa josikaea
           Japanese Tree  Syringa reticulata
           Korean (cv. 'Miss Kim')  Syringa patula 'Miss Kim'
           Littleleaf (cv. 'Superba')  Syringa microphylla 'Superba'
           Manchurian (cv. 'Miss Kim')  Syringa patula 'Miss Kim'
           Meyer (cv. 'Palibin')  Syringa meyeri 'Palibin'
           Peking, Pekin, Chinese Tree  Syringa pekinensis
           Persian  Syringa × persica
           Preston  Syringa × prestoniae
                  James Macfarlane   Syringa × prestoniae 'James Macfarlane'
Lily
           Canna   Canna spp.
Lily of the Valley Tree
           Lily of the Valley Tree, Sourwood   Oxydendrum arboreum
Linden, Basswood, Lime  (Tilia)
           American  Tilia americana
           Crimean  Tilia × euchlora
           European  Tilia × europaea
           Littleleaf  Tilia cordata
           Mongolian  Tilia mongolica
           Silver   Tilia tomentosa
Ling
           Scotch or Scots Heather  Calluna vulgaris
Lingonberry
           Lingonberry, Cowberry   Vaccinium vitis-idaea
Lithodora
           Grace Ward Lithodora    Lithodora diffusa ‘Grace Ward’ (Herbaceous Ornamental Plants)
           Lithodora    Lithodora diffusa
Liveoak
           Canyon   Quercus chrysolepis
Lobelia
           Annual   Lobelia erinus
Locust
           Black  Robinia pseudoaccacia
                  Frisia  Robinia pseudoaccacia ‘Frisia’
                  Twisty Baby  Robinia pseudoaccacia Twisty Baby™ (syn. ‘Lady Lace’)
                  Mushroom, Globe  Robinia pseudoaccacia  ‘Umbraculifera’
           Purple Robe  Robinia Purple Robe^TM
           Thornless Honeylocust  Gleditsia triacanthos var. inermis
Loquat
           Loquat   Eriobotrya japonica
Lotus
           Eastern Joy   Parakmeria lotungensis
           Red  Manglietia insignis
Lungwort
           Lungwort, Bethlehem Sage   Pulmonaria saccharata
Maackia
           Amur  Maackia amurensis
           Chinese  Maackia chinensis
Madrone
           Pacific Madrone  Arbutus menziesii
Magnolia       (Magnolia)
           Bigleaf   Magnolia macrophylla
           Bullbay  Magnolia grandiflora
           Butterflies  Magnolia 'Butterflies'
           Caerhays Belle  Magnolia 'Caerhays Belle'
           Campbell, Campbell's  Magnolia campbellii
           Cucumber  Magnolia acuminata
           Elizabeth  Magnolia 'Elizabeth'
           Kobus   Magnolia kobus
           Lily   Magnolia liliiflora
           Loebner   Magnolia × loebneri
           Oyama, Sieblod   Magnolia sieboldii
           Randy  Magnolia ‘Randy’
           Sargent's   Magnolia sargentiana var.robusta
           Saucer   Magnolia × soulangiana
           Siebold   Magnolia sieboldii
           Southern   Magnolia grandiflora
           Star   Magnolia stellata
           Star Wars  Magnolia 'Star Wars'
           Sweetbay   Magnolia virginiana
           Umbrella   Magnolia tripetala
           Yulan   Magnolia denudata
Mahonia
           Anderson's, Santa Cruz, Heartshaped  Arctostaphylos andersonii
           Arthur Menzies  Mahonia × media 'Arthur Menzies'
           Burmese  Mahonia lomariifolia  syn. Berberis lomariifolia
           Cascade  Mahonia nervosa   syn. Berberis nervosa
           California, California Grape Holly  Mahonia pinnata  syn.Berberis pinnata
           Chinese  Mahonia lomariifolia  syn. Berberis lomariifolia
           Creeping  Mahonia repens  syn. Berberis repens
           Island, (Island Barberry)  Mahonia pinnata subsp. insularis  syn. Berberis pinnata subsp. insularis
           Longleaf   Mahonia nervosa   syn. Berberis nervosa
Maidenhair Tree
           Maidenhair Tree, Ginkgo   Ginkgo biloba
Manzanita
           Anderson's, Santa Cruz, Heartshaped  Arctostaphylos andersonii
           Austin Griffiths  Arctostaphylos ‘Austin Griffiths’
           Baker  Arctostaphylos bakeri supsp. bakeri
                  Louis Edmunds  Arctostaphylos bakeri supsp. bakeri ‘Louis Edmunds’
           Common, Parry  Arctostaphylos manzanita
                  St. Helena  Arctostaphylos manzanita ‘St. Helena’
           Franciscan  Arctostaphylos hookeri subsp. franciscana
           Green, Greenleaf  Arctostaphylos patula
           Hairy  Arctostaphylos columbiana
           Heartshaped, Santa Cruz, Anderson's  Arctostaphylos andersonii
           Hoary (Downy-leaf)  Arctostaphylos canescens
           Hooker's  Arctostaphylos hookeri
           Island  Arctostaphylos insularis
           Little Sur  Arctostaphylos edmundsii
           Mexican, Pointleaf  Arctostaphylos pungens
           McMinn's, Whitehair  Arctostaphylos viridissima
                  White Cloud  Arctostaphylos viridissima ‘White Cloud’
           Montara  Arctostaphylos montaraensis
           Monterey  Arctostaphylos montereyensis
           Pajaro   Arctostaphylos pajaroensis
                   Brett's Beauty  Arctostaphylos pajaroensis 'Brett's Beauty'
           Parry, Common   Arctostaphylos manzanita
           Pinemat  Arctostaphylos nevadensis
           Pointleaf, Mexican  Arctostaphylos pungens
           Refugio  Arctostaphylos refugioensis
           Sandmat, Dune  Arctostaphylos pumila
           Shag Bark, Sand Mesa  Arctostaphylos rudis
           Santa Cruz, Anderson's, Heartshaped  Arctostaphylos andersonii
           Santa Rosa Island  Arctostaphylos confertiflora
           Sonoma, Vinehill  Arctostaphylos densiflora
                  Howard McMinn  Arctostaphylos densiflora ‘Howard McMinn’
           Whitehair, McMinn's  Arctostaphylos viridissima
                  White Cloud  Arctostaphylos viridissima ‘White Cloud’
           Wolly, Wollyleaf, Downy  Arctostaphylos tomentosa
Maple      (Acer)
           Amur  Acer ginnala    (Acer tataricum ssp. ginnala)
           Ash-leaved  Acer negundo
           Bigleaf  Acer macrophyllum
                  Seattle Sentinel  Acer macrophyllum ‘Seattle Sentinel’
           Bigtooth, Western Sugar Maple  Acer grandidentatum
           Boxelder  Acer negundo
                  Flamingo  Acer negundo ‘Flamingo’
                  Sensation  Acer negundo ‘Sensation’
                  Variegated  Acer negundo ‘Variegata’
           Cretan  Acer sempervirens
           David   Acer davidii
           Douglas   Acer glabrum var. douglasii
           Evergreen, Smooth Leaf  Acer oblongum
           Freeman  Acer × freemanii      Also see Red Maple (Acer rubrum)
                  Armstrong  Acer × freemanii ‘Armstrong’
                  Autumn Blaze  Acer × freemanii Autumn Blaze^®
                  Celebration  Acer × freemanii Celebration^®
                  Morgan  Acer × freemanii ‘Morgan’
           Fullmoon  Acer japonicum
                  Fernleaf Fullmoon  Acer japonicum ‘Aconitifolium’
                  Golden Fullmoon  Acer shirasawanum ‘Aureum’   (syn. Acer japonicum ‘Aureum’)
           Harlequin  Acer platanoides ‘Drummondii’
           Hawthron  Acer crataegifolium
           Hedge   Acer campestre
                  Dwarf Hedge  Acer campestre ‘Nanum’ (syn. ‘Compactum’,  ‘Globosum’)
           Hornbeam  Acer carpinifolium
           Japanese  Acer palmatum
                  Bloodgood  Acer palmatum ‘Bloodgood’
                  Coralbark  Acer palmatum ‘Sango Kaku’
                  Dissected  Acer palmatum var. dissectum
                  Ever Red  Acer palmatum var. dissectum atropurpureum ‘Ever Red’
                  Red Dissected   Acer palmatum var. dissectum atropurpureum
                  Shaina  Acer palmatum ‘Shaina’
                  Sharp's Pygmy  Acer palmatum ‘Sharp's Pygmy’
                  Shindeshojo, Shin Deshojo  Acer palmatum ‘Shindeshojo’
           Leatherleaf  Acer coriaceifolium  (syn. Acer cinnamomifolium)
           Manchurian Stripebark  Acer tegmentosum
           Manitoba, Boxelder  Acer negundo
           Moose  Acer spicatum
           Mountain   Acer spicatum
           Nippon   Acer nipponicum
           Norway   Acer platanoides
                  Crimson King  Acer platanoides ‘Crimson King’
                  Crimson Sentry  Acer platanoides Crimson Sentry™
                  Drummond   Acer platanoides ‘Drummondii’
                  Globe   Acer platanoides ‘Globosum’
                  Princeton Gold   Acer platanoides ‘Princeton Gold’
           Norwegian Sunset   Acer truncatum × Acer platanoides Norwegian Sunset™
           Oliver  Acer oliverianum
           Pacific Sunset   Acer truncatum × Acer platanoides Pacific Sunset™
           Painted  Acer pictum   (syn. Acer mono)
           Paperbark   Acer griseum
           Pentaphyllum  Acer pentaphyllum
           Planetree  Acer pseudoplatanus
                  Purpleleaf   Acer pseudoplatanus ‘Atropurpureum’
                  Brilliantissimum   Acer pseudoplatanus ‘Brilliantissimum’
           Purpleblow  Acer truncatum
           Red  Acer rubrum      Also see Freeman Maple (Acer freemanii)
                  Bowhall  Acer rubrum ‘Bowhall’
                  October Glory  Acer rubrum October Glory^®
                  Red Sunset  Acer rubrum Red Sunset^®
           Redvein  Acer rufinerve
           Rocky Mountain   Acer glabrum
           Shantung  Acer truncatum
           Shirasawa  Acer shiraswanum
           Silver  Acer saccharinum
                  Cutleaf  Acer saccharinum ‘Laciniatum’
           Striped or Snake Bark
                  Striped or Moosewood  Acer pensylvanicum
                  also
                  David  Acer davidii
                  Manchurian   Acer tegmentosum
                  Red Striped or Snakebark  Acer capillipes
                  Redvein  Acer rufinerve
           Sugar  Acer saccharum
                  Newton Sentry  Acer saccharum ‘Newton Sentry’  (syn. ‘Sentry’)
                  Sentry   Acer saccharum ‘Sentry’  (syn. ‘Newton Sentry’)
                  Sweet Shadow   Acer saccharum ‘Sweet Shadow’
                  Western or Rocky Mountain Sugar  Acer grandidentatum  (syn. Acer saccharum var. grandidentatum)
           Sycamore  Acer pseudoplatanus
                  Purpleleaf   Acer pseudoplatanus ‘Atropurpureum’
                  Brilliantissimum   Acer pseudoplatanus ‘Brilliantissimum’
           Tatarican, Tartarican   Acer tataricum
           Three Flowered  Acer triflorum
           Trident  Acer buergerianum
                  Streetwise  Acer buergerianum Streetwise^®
           Velvet  Acer velutinum
           Vine   Acer circinatum
Marigold
           French   Tagetes petula
Marlberry
         Marlberry, also Japanese Ardisia       Ardisia japonica
Meadosweet
           Dropwort   Filipendula vulgaris
Menziesia
           Menziesia, Mock Azalea  Menziesia ciliicalyx var. miltiflorum
           Rusty, Fool's Huckleberry, False Azalea  Menziesia ferruginea
Mescal Bean
           Mescal Bean, Frijolito, Texas Mountain Laurel  Sophora secundiflora
Mexican Bamboo
           Mexican Bamboo, Japanese Knotweed  Polygonum cuspidatum  (syn. Fallopia japonica)
Mexican Orange
           Aztec Pearl  Choisya ‘Aztec Pearl’
           Mexican Orange  Choisya teranta
                  Sundance  Choisya teranta ‘Sundance’
Mimosa Tree
           Mimosa Tree, Silk Tree  Albizia julibrissin
                  Summer Chocolate Mimosa Tree, Silk Tree,  Albizia julibrissin ‘Summer Chocolate’
Mockorange
           Buckley's Quill  Philadelphus ×  ‘Buckley's Quill’
           Japanese, Tobira  Pittosporum tobira
           Miniature (or Dwarf) Snowflake  Philadelphus × virginalis ‘Miniature Snowflake’
           Natchez  Philadelphus × virginalis ‘Natchez’
           Virginal   Philadelphus × virginalis
           Wild, Lewis  Philadelphus lewisii
Monkey Puzzle
           Monkey Puzzle, Chilean Pine  Araucaria araucana
Mountain Ash
           European   Sorbus aucuparia
                  Cardinal Royal Mountain Ash  Sorbus aucuparia Cardinal Royal^TM
           Greene, Western   Sorbus scopulina
           Korean, Alder   Sorbus alnifolia
           Sitka   Sorbus sitkensis
           Whitebeam    Sorbus aria
Mountain-laurel
           Mountain-laurel   Kalmia latifolia
Mountain Lover
           Mountain Lover, Canbyi Paxistima  Paxistima canbyi
           Mountain Lover, Oregon Boxwood  Paxistima myrtifolia (syn. Pachistima myrsinites)
Mountain-mahogany
           Birchleaf  Cercocarpus betuloides
           Curlleaf  Cercocarpus ledifolius
           Smooth  Cercocarpus minutiflorus
Mulberry
           Common, White, Silkworm, Russian  Morus alba
                  Contorted  Morus alba ‘Unryu’
Myrtle
           Bog, Sweetgale  Myrica gale
           Common Crepe  Lagerstroemia indica
           Oregon, California, California Bay  Umbellularia californica
           Pacific Waxmyrtle  Myrica californica
Nannyberry
           Nannyberry, Sheepberry  Viburnum lentago
Ninebark   (Physocarpus)
           Common, Eastern  Physocarpus opulifolius
                  'Dart's Gold'   Physocarpus opulifolius 'Dart's Gold'
                  'Diablo'  Physocarpus opulifolius 'Diablo'
                  'Luteus'  Physocarpus opulifolius 'Luteus'
           Mallow  Physocarpus malvaceus
           Western, Pacific  Physocarpus capitatus
Oak   (Quercus)
           Bimondors, Two Worlds  Quercus × bimondorum
           Black  Quercus velutina
           Black, Blackjack, Emory  Quercus emoryi
           Blackjack, Jack, Black, Barren  Quercus marilandica
           Blue, California Blue  Quercus douglasii
           Brewer's  Quercus garryana var. breweri
           Bur  Quercus macrocarpa
           California Black  Quercus kelloggii
           Canyon Live  Quercus chrysolepis
           Chestnut-leaved  Quercus castaneifolia
           Chinquapin, Chinkapin, Yellow Chestnut  Quercus muelenbergii
           Chinquapin (Dwarf)  Quercus prinoides
           Coast Live  Quercus agrifloia
           Cork  Quercus suber
           Crimson Spire™  Quercus × bimondorum Crimson Spire™ (Q. b 'Crimschmidt')
           Deer, Sadler  Quercus sadleriana
           Desert Live, Scrub Live  Quercus turbinella
           Dwarf Chinquapin  Quercus prinoides
           Emory, Black, Blackjack  Quercus emoryi
           Engelmann, Mesa  Quercus engelmannii
           English  Quercus robur
                  Upright English  Quercus robur ‘Fastigiata’
           Gambel  Quercus gambelii
           Holly or Holm  Quercus ilex
           Huckleberry  Quercus vaccinifolia
           Hungarian  Quercus frainetto
           Interior Live  Quercus wislizeni
           Italian  Quercus frainetto
           Leather  Quercus durata
           Mesa, Engelmann  Quercus engelmannii
           Mongolian   Quercus mongolica
           Mossycup, Bur   Quercus macrocarpa
           Oregon White  Quercus garryana
           Oregon White  Quercus garryana
           Pin  Quercus palustris
           Red  Quercus rubra
           Sawtooth  Quercus acutissima
           Sadler, Deer  Quercus sadleriana
           Scarlet  Quercus coccinea
           Scrub, California Scrub  Quercus berberidifolia
           Scrub Live, Desert Live  Quercus turbinella
           Shingle   Quercus imbricaria
           Silky Oak   Grevillea robusta
           Swamp White  Quercus bicolor
           Tanbark  Lithocarpus densiflorus
                  Shub Tanbark  Lithocarpus densiflorus var. echinoides
           Two Worlds, Bimondors  Quercus × bimondorum
           Wavyleaf  Quercus undulata  (syn. Quercus × pauciloba)
           White (Eastern )   Quercus alba
           White (Oregon )   Quercus garryana
           Willow   Quercus phellos
Oceanspray
           Oceanspray    Holodiscus discolor
Ocotillo
           Ocotillo  Fouquieria splendens
Oleander
           Yellow   Thevetia peruviana
Oleaster   (Elaeagnus)
Olive
           Autumn   Elaeagnus umbellata
           Common,   Olea europaea
           Delavay Tea, Delavay Osmanthus  Osmanthus delavayi
           Fragrant Tea Olive, Sweet Osmanthus  Osmanthus fragrans
           Holly Tea, Holly Osmanthus  Osmanthus heterophyllus
           Russian   Elaeagnus angustifolia
           Thorny   Elaeagnus pungens
Orange
           Mexican  Choisya ternata
           Osage  Maclura pomifera
           Trifoliage, Hardy or Bitter  Poncirus trifoliata
Orange Ball Tree
           Orange Ball Tree, Orange Butterfly Bush   Buddleia globosa
Oregon Boxwood
           Oregon Boxwood, Mountain Lover  Paxistima myrtifolia (syn. Pachistima myrsinites)
Oregon Grape
           Oregon Grape   Mahonia aquifolium
Oregon Myrtle
           Oregon Myrtle, California Bay  Umbellularia californica
Orchid Tree
           Orchid Tree   Bauhinia variegata
Osage-orange
           Osage-orange   Maclura pomifera
Osmanthus
           Burkwood Osmanthus   Osmanthus × burkwoodii
           Delavay Osmanthus, Delavay Tea Olive   Osmanthus delavayi
           Fortune’s Osmanthus  Osmanthus × fortunei
           Holly Osmanthus, Holly Tea Olive  Osmanthus heterophyllus
                  Goshiki  Osmanthus heterophyllus ‘Goshiki’
                  Gulftide  Osmanthus heterophyllus ‘Gulftide’
                  Rotundifolius  Osmanthus heterophyllus ‘Rotundifolius’
           Sweet, Fragrant Tea Olive  Osmanthus fragrans
Pachysandra
            Allegheny Pachysandra  Pachysandra procumbens
            Pachysandra, Japanese Spurge   Pachysandra terminalis
Pagoda Tree (Pagodatree)
            Japanese, Scholar Tree  Sophora japonica
Palo Verde
           Blue   Cercidium floridum
           Littleleaf, Foothill, Yellow  Cercidium microphyllum
Pansy
            Pansy   Viola x wittrockiana
Paper Bark   (Edgeworthia)
           Paper Bark  Edgeworthia papirifera
Parasol Tree
           Chinese, Japanese Varnish Tree, Phoenix Tree   Firmiana simplex
Parrotia
           Persian, Persian Ironwood  Parrotia persica
Passion Flower  (Passiflora)
           Blue, Blue Crown  Passiflora caerulea
Paulownia
           Royal, Empress Tree   Paulownia tomentosa
Pawpaw
           Common Pawpaw, Custard Apple  Asimina triloba
Peanut Butter Tree
           Peanut Butter Tree, Harlequin Glorybower   Clerodendrum trichotomum
Peashrub (Caragana)
           Globe Russian  Caragana frutex 'Globosa'
           Lorberg  Caragana arborescens 'Lorbergii'
           Pygmy  Caragana pygmaea
           Siberian  Caragana arborescens
Pear
           Callery  Pyrus calleryana
           Korean Sun  Pyrus fauriei Korean Sun™  ('Westwood')
Pearlbush
           Common  Exochorda racemosa
           The Bride   Exochorda × macrantha 'The Bride'
Pecan
           Pecan  Carya illinoinensis
Penstemon
           Penstemon   Penstemon sp.
Peony
           Chinese Moutan  Paeonia suffruticosa
           Common  Paeonia officinalis
           Tibetan  Paeonia lutea ssp. ludlowii
           Tree  Paeonia suffruticosa
Pepperidge
           Pepperidge, Sour Gum, Black Gum, Black Tupelo   Nyssa sylvatica
Periwinkle
           Dwarf   Vinca minor
           Large   Vinca major
Pernettya
           Chilean  Gaultheria mucronata  (formerly Pernettya mucronata)
                  Pink Snowdrop  Gaultheria mucronata  Pink Snowdrop™ (syn. Pernettya mucronata Pink Snowdrop™)
Persimmon
           Common  Diospyros virginiana
           Japanese, Chinese, Oriental  Diospyros kaki
           Texas, Mexican, Black  Diospyros texana
Petunia
           Hybrid   Petunia × hybrida
Pheasant-eye
           Pheasant-eye, Pheasantberry, Himalaya Honeysuckle  Leycesteria formosa
Phlox
           Moss, Creeping, Moss Pink   Phlox subulata
           Moss, Creeping, Moss Pink   Phlox subulata (Herbaceous Ornamental Plants)
Photinia
           Chinese  Photinia serrulata
           (Chinese Stranvaesia)  Photinia davidiana    syn. Stranvaesia davidiana
           Fraser  Photinia × fraseri
                  Pink Marble™  Photinia × fraseri Pink Marble™  (syn. 'Cassini')
           Japanese  Photinia glabra
           Oriental  Photinia villosa
Pieris
           Chinese, Himalaya   Pieris formosa var. forrestii
           Japanese   Pieris japonica
Pincushion Flower
           Pincushion Flower   Scabiosa caucasica
Pine  (Pinus)        (needles/bundle)
           Aleppo  Pinus halepensis       (2)
           Austrian  Pinus nigra       (2)
           Bosnian  Pinus leucodermis       (2)
           Bristlecone  Pinus aristata       (5)
                  Bashful #75  Pinus aristata ‘Bashful #75’
           Cluster, Maritime, Turpentine  Pinus pinaster       (2)
           Digger  Pinus sabiniana        (3)
           Dwarf Siberian, Japanese Stone  Pinus pumila       (5)
           Eastern White  Pinus strobus       (5)
                  Alba  Pinus strobus ‘Alba’
                  Fastigiata  Pinus strobus ‘Fastigiata’
                  Nana  Pinus strobus ‘Nana’
                  Pendula  Pinus strobus ‘Pendula’
                  Sea Urchin  Pinus strobus ‘Sea Urchin’
           Gaungdong, Kwangtung  Pinus kwangtungensis       (5)
           Gray  Pinus sabiniana        (3)
           Himalayan or Bhutan  Pinus wallichiana        (5)
                  Zebrina  Pinus wallichiana ‘Zebrina’
           Hoop  Araucaria cunninghamii       
           Jack  Pinus banksiana        (2)
           Japanese Black  Pinus thunbergii        (2)
                  Thunderhead  Pinus thunbergii ‘Thunderhead’
           Japanese Red  Pinus densiflora        (2)
                  Umbraculifera  Pinus densiflora ‘Umbraculifera’
                  Weeping  Pinus densiflora ‘Pendula’
           Japanese Snow Pine, Tan Mano Uki Japanese White Pine  Pinus parviflora ‘Tan Mano Uki’
           Japanese Stone, Dwarf Siberian  Pinus pumila       (5)
           Japanese White  Pinus parviflora        (5)
                  Glauca  Pinus parviflora ‘Glauca’
                  Pigmy Yatsubusa  Pinus parviflora ‘Pigmy Yatsubusa’
                  Tan Manao Uki  Pinus parviflora ‘Tan Mano Uki’
           Jeffrey  Pinus jeffreyi       (3)
           Knobcone  Pinus attenuata       (3)
           Kwangtung, Gaungdong  Pinus kwangtungensis       (5)
           Lacebark, Whitebark  Pinus bungeana       (3)
           Limber  Pinus flexilis        (5)
                  Vanderwolf's Pyramid   Pinus flexilis 'Vanderwolf's Pyramid'
           Lodgepole  Pinus contorta var. latifolia       (2)
                  Chief Joseph  Pinus contorta var. latifolia ‘Chief Joseph’
           Maritime, Cluster, Turpentine  Pinus pinaster       (2)
           Mexican White, Southwestern White  Pinus strobiformis       (5)
           Monterey   Pinus radiata       (3)
           Mugo  Pinus mugo       (2)
                  Golden Mound  Pinus mugo ‘Golden Mound’
                  Mini Mitsch  Pinus mugo ‘Mini Mitsch’
                  Oregon Jade  Pinus mugo ‘Oregon Jade’
           Norway, Red (American)  Pinus resinosa        (2)
           Pinyon, Piñón, Colorado Pinyon, Two-needle Pinyon  Pinus edulis      (2, rarely 3)
           Ponderosa  Pinus ponderosa        (3, sometimes 2)
                  Dixie  Pinus ponderosa ‘Dixie’
           Red (American)  Pinus resinosa        (2)
           Scots, Scotch  Pinus sylvestris        (2)
           Shore  Pinus contorta var. contorta        (2)
                  Spaan's Dwarf   Pinus contorta var. contorta ‘Spaan's Dwarf’
           Singleleaf Pinon  Pinus monophylla        (1)
           Southwestern White, Mexican White  Pinus strobiformis       (5)
           Sugar  Pinus lambertiana       (5)
           Swiss Stone  Pinus cembra      (5)
                  Columnar   Pinus cembra ‘Columnaris’       (5 )
           Tanyosho  Pinus densiflora  ‘Umbraculifera’      (2)
           Turpentine, Maritime, Cluster  Pinus pinaster      (2)
           Umbrella, Italian Stone  Pinus pinea       (2)
           Umbrella (Japanese)  see Umbrella Pine  Sciadopitys verticillata
           Virginia, Scrub, New Jersey  Pinus virginiana       (2)
                  Wate's Golden  Pinus virginiana ‘Wate's Golden’
           Western White   Pinus monticola        (5)
                  Weeping  Pinus monticola ‘Pendula’
           Whitebark, Lacebark  Pinus bungeana       (3)
           Whitebark, Scrub, White  Pinus albicula       (5)
           Wollemi   Wollemia nobilis       (3)
           Yunnan  Pinus yunnanensis       (3)
Pineapple Guava
           Pineapple Guava, Feijoa  Feijoa sellowiana
Pinks
           Pinks   Dianthus spp.
Pistache, Pistachio
           Chinese   Pistacia chinensis
Pittosporum
           Japanese Mock Orange, Tobira  Pittosporum tobira
           Kohuhu, Tawhiwhi  Pittosporum tenuifolium
           Marjorie Channon  Pittosporum tenuifolium ‘Marjorie Channon’
           Silver Sheen  Pittosporum tenuifolium ‘Silver Sheen’
           Tobira, Japanese Mock Orange  Pittosporum tobira
Planetree
           London   Platanus × acerifolia
Plantain Lily
           Hosta   Hosta spp.
Plum
           American, Wild, August, Goose  Prunus americana
           Blireana  Prunus × blireana  (syn. Prunus × blireiana)
           Cherry  Prunus cerasifera
           Cistena (Purpleleaf Sandcherry)  Prunus × cistena
           Indian  Oemleria cerasiformis
           Klamath  Prunus subcordata
           Pissard Flowering  Prunus cerasifera ‘Atropurpurea’
           Krauter's Vesuvius Flowering  Prunus cerasifera ‘Krauter's Vesuvius’
           Myrobalan  Prunus cerasifera
           Newport Flowering  Prunus ‘Newport’
           Thundercloud Flowering  Prunus cerasifera ‘Thundercloud’
            Wild, American, August, Goose  Prunus americana
Podocarp
           Alpine  Podocarpus nirvalis
           Lowland, Lowland Totara  Podocarpus totara
           Blue Gem Tasmainian Podocarp  Podocarpus aplinus 'Blue Gem'
Poison Oak
           Poison Oak  Rhus diversiloba
Pomegranate
           Pomegranate   Punica granatum
Pondcypress
           Pond  Taxodium ascendens
Poplar
           Black, Black Cottonwood   Populus trichocarpa  (syn. Populus balsamifera  subsp. trichocarpa)
           Gray  Populus × canescens
           Lombardy, Lombardy Black Poplar  Populus nigra   ‘Italica’
           Yellow, Tulip, Tuliptree  Liriodendron tulipifera
           White, European White, Silver  Populus alba  
Porcelain Berry
           Porcelailn Berry, Porcelalin Ampelopsis   Ampelopsis brevipedunculata
                  Elegans  Ampelopsis brevipedunculata
Port Orford Cedar   see Falsecypress, Lawsons
Prickly Ash
           Prickly Ash, Toothache Tree, Northern Prickly Ash   Zanthoxylum americanum
           Japanese   Zanthoxylum piperitum
           Winged   Zanthoxylum planispinum
Primrose
           Primrose   Primula spp.
Princess Flower
           Pincess Flower, Glory Bush, Lasiandra  Tibouchina urvilleana
Privet  (Ligustrum)
           Chinese   Ligustrum sinense
           Golden    Ligustrum ovalifolium ‘Aureum’
           Japanese, Waxleaf   Ligustrum japonicum
           Mock  Phillyrea latifolia
Quince
           (Common) Quince   Cydonia oblonga
           Flowering Quince   Chaenomeles speciosa
Rabbitbrush
           Gray, Rubber  Chrysothamnus nauseosus
           Green, Douglas, Sticky-leaved, Yellow,   Chrysothamnus viscidiflorus
Raintree
           Golden Raintree   Koelreuteria paniculata
Raisintree
           Raisintree  Hovenia dulcis
Raspberry
           Flowering, Purple-flowering  Rubus odoratus
Red-hot Poker
           Red-hot Poker, Torchlily   Kniphofia uvaria
Redbud   (Cercis)
           Chinese  Cercis chinensis
                  Avondale  Cercis chinensis ‘Avondale’
           Eastern  Cercis canadensis
                  Whiteflowered  Cercis canadensis var. alba
           Forest Pansy  Cercis canadensis ‘Forest Pansy’
           Hazel  Disanthus cercidifolius
           Mediterranean, Judas Tree  Cercis siliquastrum
           Oklahoma  Cercis canadensis var. texensis ‘Oklahoma’
           Western, California  Cercis occidentalis
Redcedar
           Eastern  Juniperus virginiana
           Western  Thuja plicata
Red Valerian
           Red Valerian, Jupiter’s Beard  Centranthus ruber
Redwood
           Coastal  Sequoia sempervirens
                  Adpressa  Sequoiadendron sempervirens ‘Adpressa’
                  Albospica  Sequoiadendron sempervirens ‘Albospica’
           Dawn  Metasequoia glyptostroboides
           Sierra, Giant  Sequoiadendron giganteum
                  Albospica  Sequoiadendron giganteum 'Albospica'
                  Pendulum   Sequoiadendron giganteum 'Pendulum'
           Taiwan  Taiwania cryptomerioides
Rhaphiolepis
           Dwarf Yeddo  Rhaphiolepis umbellata ‘Minor’  (syn.  Gulf Green^TM)
           Gulf Green  Rhaphiolepis umbellata Gulf Green^TM (syn. ‘Minor’)
           Indian Hawthorn  Rhaphiolepis indica
                  Pink Lady  Rhaphiolepis indica ‘Pink Lady’
           Majestic Beauty  Rhaphiolepis ‘Majestic Beauty’
           Yeddo  Rhaphiolepis umbellata
                  Dwarf  Rhaphiolepis umbellata ‘Minor’  (syn.  Gulf Green^TM)
Rhododendron, including Azalea
           Airy Fairy  Rhododendron ‘Airy Fairy’
           Alice   Rhododendron ‘Alice’
           Anna Rose Whitney   Rhododendron ‘Anna Rose Whitney’
           April Glow   Rhododendron ‘April Glow’
           Arboreum cinnamomeum roseum  Rhododendron arboreum ssp. cinnamomeum var. roseum
           Arthur J. Ivens  Rhododendron ‘Arthur J. Ivens’
           Augustine   Rhododendron augustinii
           Ball of Snow, correct name Boule de Neige  Rhododendron ‘Boule de Neige’  (syn. 'Ball of Snow')
           Beauty of Littleworth    Rhododendron ‘Beauty of Littleworth’
           Bibiani    Rhododendron ‘Bibiani’
           Blue Diamond    Rhododendron ‘Blue Diamond’
           Blue Peter  Rhododendron ‘Blue Peter’
           Boule de Neige  Rhododendron ‘Boule de Neige’  (syn. 'Ball of Snow')
           Bow Bells   Rhododendron ‘Bow Bells’
           Bric-a-brac    Rhododendron ‘Bric-a-brac’
           Bruce Brechtbill   Rhododendron ‘Bruce Brechtbill<’
           Bureau  Rhododendron bureavii
           Catawba    Rhododendron catawbiense
           Cheer  Rhododendron ‘Cheer’
           Chevalier Felix de Sauvage  Rhododendron ‘Chevalier Felix de Sauvage’
           Chinese Silver  Rhododendron argyrophyllum ssp. nankingense ‘Chinese Silver’
           Christmas Cheer  Rhododendron ‘Christmas Cheer’
           Cinnabar  Rhododendron cinnabarinum
           Cinnamon  Rhododendron arboreum ssp. cinnamomeum
           Coloxanthum  Rhododendron campylocarpum ssp. coloxanthum
           Concinnum  Rhododendron concinnum
           Cotton Candy  Rhododendron ‘Cotton Candy’
           Crater Lake   Rhododendron ‘Crater Lake’
           Crest   Rhododendron ‘Crest’
           Cunningham's White  Rhododendron ‘Cunningham's White’
           Cynthia   Rhododendron ‘Cynthia’
           Daphnoides   Rhododendron ‘Daphnoides’
           Dauricum  Rhododendron dauricum
           Davidsonianum  Rhododendron davidsonianum
           Day Dream, Biscuit form     Rhododendron ‘Day Dream’, Biscuit form
           Deciduous Azalea   Rhododendron    deciduous azalea, examples
           Degronianum ssp. yakushimanum  see Rhododendron yakushimanum
           Delaware Valley White Azalea  Rhododendron ‘Delaware Valley White’
           Discolor, Fortune Discolor  Rhododendron fortunei ssp. discolor
           Dora Amateis   Rhododendron ‘Dora Amateis’
           Double Diamond  Rhododendron johnstoneanum ‘Double Diamond’
           El Camino  Rhododendron ‘El Camino’
           Elisabeth Hobbie   Rhododendron ‘Elisabeth Hobbie’
           Elizabeth   Rhododendron ‘Elizabeth’
           Falconer  Rhododendron falconeri ssp.falconeri
           Fantastic  Rhododendron ‘Fantastic’
           Formosum  Rhododendron formosum var.formosum
           Forrest  Rhododendron forrestii ssp.forrestii
           Fortune Discolor, Discolor  Rhododendron fortunei ssp. discolor
           Frilly Lemon Azalea  Rhododendron ‘Frilly Lemon’
           Gartendirektor Rieger  Rhododendron ‘Gartendirektor Rieger’
           Grace Seabrook  Rhododendron ‘Grace Seabrook’
           Haematodes  Rhododendron haematodes ssp. haematodes
           Hanceanum  Rhododendron hanceanum
           Hardijzer's Beauty Azaleodendron  Rhododendron ‘Hardijzer's Beauty’
           Harry Carter  Rhododendron ‘Harry Carter’
           Hino Crimson Azalea  Rhododendron ‘Hino Crimson’
           Hinode Giri Azalea  Rhododendron ‘Hinode Giri’
            Hippophaeoides  Rhododendron hippophaeoides var. hippophaeoides
            Hodgson  Rhododendron hodgsonii
           Horizon Monarch  Rhododendron ‘Horizon Monarch’
           Hotei  Rhododendron ‘Hotei’
           Irene Koster Azalea  Rhododendron occidentale ‘Irene Koster’
           Irroratum   Rhododendron irroratum
           Jean Marie    Rhododendron ‘The Honourable Jean Marie de Montague’
           Keiskei   Rhododendron keiskei
           Ken Janeck  Rhododendron ‘Ken Janeck’
           Kesangiae   Rhododendron kesangiae
           Kiusianum Azalea  Rhododendron kiusianum
           Lacteum   Rhododendron lacteum
           Lem's Cameo  Rhododendron ‘Lem's Cameo’
           Lem's Monarch   (syn. 'Pink Walloper') Rhododendron ‘Lem's Monarch’  or ‘Pink Walloper’
           Lights Azalea Hybrids  Rhododendron   Lights Azalea Hybrid Series
                  Including: 'Northen Lights', 'Orchid Lights', 'Rosy Lights', and 'White Lights'
           Loderi Hybrid    Rhododendron ‘Loderi’ hybrid
           Luteiflorum   Rhododendron luteiflorum
           Lutescens   Rhododendron lutescens
           Macabeanum   Rhododendron macabeanum
           Moonstone   Rhododendron ‘Moonstone’
           Mrs. Furnival   Rhododendron ‘Mrs. Furnival’
           Mrs. G.W. Leak   Rhododendron ‘Mrs.G.W. Leak’
           Myrtifolium  Rhododendron ‘Myrtifolium’
           Niveum  Rhododendron niveum
           Orbiculare  Rhododendron orbiculare ssp. orbiculare
           Oreotrephes  Rhododendron oreotrephes
           Oudijk's Sensation  Rhododendron ‘Oudijk's Sensation’
           Ovatum   Rhododendron ovatum
           Pachytrichum  Rhododendron pachytrichum
           Peekaboo  Rhododendron ‘Peekaboo’
           Pink Pearl    Rhododendron ‘Pink Pearl’
           Pink Walloper   Rhododendron ‘Pink Walloper’
           Pioneer Silvery Pink   Rhododendron ‘Pioneer Silvery Pink’
           P.J.M.   Rhododendron ‘P.J.M.’
           Plumleaf Azalea   Rhododendron prunifolium
           Point Defiance  Rhododendron  ‘Point Defiance’
           Pontic Azalea  Rhododendron luteum
           President Roosevelt  Rhododendron ‘President Roosevelt’
           Purple Splendor Azalea   Rhododendron ‘Purple Splendor’
           Purple Splendour Rhododendrn   Rhododendron ‘Purple Splendour’
           Racemosum   Rhododendron racemosum
           Ramapo    Rhododendron ‘Ramapo’
           Rosamundi    Rhododendron ‘Rosamundi’
           Roseum Elegans   Rhododendron ‘Roseum Elegans’
           Royal Azalea   Rhododendron schlippenbachii
           Roxieanum Oreonasters  Rhododendron roxieanum var. oreonasters
           Rubiginosum  Rhododendron rubiginosusm
           Sappho   Rhododendron ‘Sappho’
           Scarlet Wonder   Rhododendron ‘Scarlet Wonder’
           Sinofalconri  Rhododendron falconeri
           Sinogrande  Rhododendron sinogrande
           Smirnow  Rhododendron smirnowii
           Snow Lady   Rhododendron ‘Snow Lady’
           Spider Azalea  Rhododendron stenopetalum ‘Linearifolium’
           Taurus   Rhododendron ‘Taurus’
           Temple Belle   Rhododendron ‘Temple Belle’
           Thomson  Rhododendron thomsonii ssp. thomsonii
           Trilby  Rhododendron ‘Trilby ’
           Ward  Rhododendron wardii
           Western Azalea  Rhododendron occidentale
           Western Rhododendron  Rhododendron macrophyllum
           Wild Thyme Azalea  Rhododendron serpyllifolium
           Unique    Rhododendron ‘Unique’
           Winsome   Rhododendron ‘Winsome’
           Yak    Rhododendron yakushimanum
Rockcress
           Purple    Aubrieta deltoidea
           Wall    Arabis caucasica
Rockrose   (Cistus)
           Ann Palmer  Cistus ‘Ann Palmer’,  (syn. Cistus × fernandesiae ‘Ann Palmer’)
           Common Gum   Cistus ladanifer
           Decumbens  Cistus × dansereaui ‘Decumbens’
           Elma  Cistus ‘Elma’
           Fontfroide  Cistus × florentinus ‘Fontfroide’
           Grayswood Pink  Cistus ‘Grayswood Pink’
           Orchid  Cistus × purpureus
           Snow Fire  Cistus ‘Snow Fire’
           Sunset  Cistus × purverulentus  ‘Sunset’
           Victor Reiter  Cistus ‘Victor Reiter’
           Warley Rose  Cistus × crispatus ‘Warley Rose’
           White   Cistus × corbariensis
Rose
           Desert   Adenium obesum
           Japanese  Kerria japonica
           Multiflora   Rosa multiflora
           Nootka, Common Wild  Rosa nutkana
           Rugosa, Beach Tomato  Rosa rugosa
           Sweetbriar  Rosa eglanteria
           Woods'  Rosa woodsii
Rosemary
           Rosemary  Rosmarinus officinalis
           Rosemary Grevillea  Grevillea rosmarinifolia
Rose of Sharon
           Rose of Sharon, Shrub Althea   Hibiscus syriacus
Royal Paulownia
           Royal Paulownia, Empress Tree   Paulownia tomentosa
Rubber Tree
           Hardy Rubber Tree  Eucommia ulmoides
Russian Olive
           Russian Olive   Elaeagnus angustifolia
Russian Sage
           Russian Sage   Perovskia atriplicifolia
Sage
           Bethlehem, Lungwort   Pulmanaria saccharata
           Garden or Common   Salvia officinalis
           Russian   Perovskia atriplicifolia
Sagebrush
           Big  Artemisia tridentata
Saguaro
           Saguaro  Carnegiea gigantea
Saint John's Bread
           St. John's Bread, Carob  Ceratonia siliqua
Saint John's Wort
           Aaron’s Beard, Creeping St. John’s Wort   Hypericum calycinum
Salal
           Salal   Gaultheria shallon
Salmonberry
           Salmonberry   Rubus spectabilis
Salvia
           Garden or Common Sage  Salvia officinalis
           Salvia, Sage  Salvia nemorosa
           Salvia, Scarlet Sage    Salvia splendens
Sandcherry  
            Purpleleaf, Redleaf or Cistena  Prunus × cistena
           Western Sand Cherry  Prunus besseyi
Sapphireberry  
            Sapphireberry, Asiatic Sweetleaf  Symplocos paniculata
Sarcococca  (Sarcococca)
           Fragrant  Sarcococca confusa
           Himalayan  Sarcococca hookeriana
           Himalayan  Sarcococca hookeriana var. humilis
Sassafras
           Common    Sassafrass albidum
Scholar-Tree
           Scholar-tree, Japanese Pagodatree  Sophora japonica  (syn. Styphnolobium japonicum)
                  Weeping Scholar-tree, Dragon-claw Scholar-tree  Sophora japonica ‘Pendula’
Sea Pink
           Sea Pink, Sea Thrift  Armeria maritima
Sedum
           Sedum   Sedum spp.
Serviceberry
           Alleghney  Amelanchier laevis
           Apple  Amelanchier × grandiflora
                  Autumn Brilliance  Amelanchier × grandiflora ‘Autumn Brilliance’
                  Forest Prince  Amelanchier × grandiflora ‘Forest Prince’
           Pacific, Saskatoon Berry  Amelanchier alnifolia
                  Regent Serviceberry, Saskatoon, or Juneberry  Amelanchier alnifolia ‘Regent’
           Shadblow, Thicket  Amelanchier canadensis
           Western, Saskatoon Berry  Amelanchier alnifolia
Seven Son Flower
           Seven Son Flower  Heptacodium miconioides
Shadblow
           Shadblow, Shadblow Serviceberry  Amelanchier canadensis
Shasta Daisy
           Shasta Daisy   Leucanthemum × superbum
Sheepberry
            Sheepberry, Nannyberry Viburnum  Viburnum lentago
Silktassel
           Fremont  Garry fremontii
           Wavyleaf, Coast  Garry elliptica
           Yellowleaf, Ashy  Garry flavescens
Silk Tree
           Silk Tree, Mimosa Tree  Albizia julibrissin
                  Summer Chocolate Silk Tree, Mimosa Tree  Albizia julibrissin ‘Summer Chocolate’
Silverbell
           Carolina   Halesia carolina  (syn. Halesia tetraptera)
           Mountain   Halesia monticola  (syn. Halesica carolina or Halesia tetraptera)
Silverberry
           Ebbinge’s Silverberry/Elaeagnus   Elaeagnus × ebbingei
                   Gilt Edge Silverberry/Elaeagnus   Elaeagnus × ebbingei ‘Gilt Edge’
           Thorny Silverberry/Elaeagnus  Elaeagnus pungens
                    Maculata Thorny Silverberry/Elaeagnus   Elaeagus pungens ‘Maculata’
Silvergrass
           Japanese   Miscanthus sinensis
Skimmia
           Japanese   Skimmia japonica
           Reeves   Skimmia reevesiana
Smoketree
           American  Cotinus obovatus
           Common  Cotinus coggygria
                  Golden Spirit  Cotinus coggygria Golden Spirit™  (syn. ‘Ancot’)
                  Royal Purple   Cotinus coggygria ‘Royal Purple’
Sneezeweed
           Common   Helenium autumnale
Snowball
           Japanese Snowball   Viburnum plicatum
Snowbell
           Fragrant  Styrax obassia
           Japanese  Styrax japonicus
                  Pink Chimes Snowbell  Styrax japonicus ‘Pink Chimes’
Snowberry
           Coralberry, Indiancurrant Coralberry  Symphoricarpos orbiculatus
           Common  Symphoricarpos albus
           Creeping, Spreading  Symphoricarpos mollis
           Doorenbos  Symphoricarpos × doorenbosii
                  Magic Berry  Symphoricarpos × doorenbosii ‘Magic Berry’
Snowbrush
           Snowbrush  Ceanothus velutinus
Snowwreath
           Shasta  Neviusia cliftonii
Soapbark
           Soap-bark Tree   Quillaja saponaria
Soapberry
           Western   Sapindus drummondii
Sorrel
           Redwood Sorrel, Oregon Oxalis   Oxalis oregona
Sourberry
           Sourberry, Skunkbush Sumac  Rhus trilobata
Sour Gum
           Sour Gum, Black Tupelo, Black Gum, Pepperidge   Nyssa sylvatica
Sourwood
           Sourwood, Lily of the Valley Tree   Oxydendrum arboreum
Spicebush
           Common Spicebush  Lindera benzoin
           Western  Calycanthus occidentalis
Spiderwort
           Spiderwort    Tradescantia virginiana
Spiketail
           Early Spiketail   Stachyurus praecox
Spindle Tree
            Common, European Euonymus,  Euonymus europaeus
Spirea  (Spiraea)
           Anthony Waterer  Spiraea japonica   ‘Anthony Waterer’ (syn. S. × bumalda ‘Anthony Waterer’)
           Birch-leaf, Shiny-leaf  Spiraea betulifolia
                  Tor Birch-leaf  Spiraea betulifolia ‘Tor’
           Bridalwreath
                  Spiraea prunifolia ‘Plena’
                  Spiraea x vanhouttei
           Bumald  Spiraea japonica  ‘Bumalda’ (syn. S. × bumalda)
           Daphne  Spiraea japonica var. alpina  (syn. S. japonica 'Alpina')
           Douglas  Spiraea douglasii
           False  Astilbe spp.
           Fujino Pink  Spiraea thunbergii ‘Fujino Pink’
           Garland   Spiraea × arguta
           Goldflame  S. japonica   ‘Goldflame’ (syn. S. × bumalda ‘Goldflame’)
           Goldmound  S. japonica ‘Goldmound’ (syn. Spiraea ‘Goldmound’)
           Japanese   Spiraea japonica
           Korean   Spiraea fritschiana
           Limemound  S. japonica  Limemound^®; (syn. S. × bumalda Limemound^®)
           Little Princes   Spiraea japonica ‘Little Princes’
           Lemon Princes  Spiraea japonica ‘Lemon Princes’
           Magic Carpet   Spiraea japonica Magic Carpet^®
           Mellow Yellow^TM  Spiraea thunbergii ‘Ogon’ (syn. Mellow Yellow^TM)
           Mountain   Spiraea densiflora
           Pink Ice    Spiraea × vanhouttei ‘Pink Ice’
           Snowmound Nippon   Spiraea nipponica ‘Snowmound’
           Tor Birch-leaf  Spiraea betulifolia ‘Tor’
           Thunberg   Spiraea thunbergii
           Van Houtte, Van Houtte Bridal Wreath   Spiraea × vanhouttei
           Western  Spiraea douglasii
Spruce (Picea)
           Black  Picea mariana
                  Variegated  Picea mariana ‘Aureovariegata’
           Black Hills  Picea glauca var. densata
           Brewer  Picea breweriana
           Colorado Blue  Picea pungens var. glauca
                  Baby Blueeyes  Picea pungens ‘Baby Blueeyes’
                  Fastigiata  Picea pungens ‘Fastigiata’
                  Fat Albert  Picea pungens ‘Fat Albert’
                  Prostrate  Picea pungens ‘Glauca Prostrata’
                  Weeping  Picea pungens ‘The Blues’
           Engelmann  Picea engelmannii
           Dragon  Picea asperata
           Dwarf Alberta, Dwarf White  Picea glauca ‘Conica’
           Nest  Picea abies ‘Nidiformis’
           Norway  Picea abies
                  Cupressina  Picea abies ‘Cupressina’
                  Nest  Picea abies ‘Nidiformis’
                  Weeping or Pendulus Norway  Picea abies var. pendula
           Oriental  Picea orientalis
           Serbian  Picea omorika
                  Bruns  Picea omorika ‘Bruns’
                  Pimoko  Picea omorika ‘Pimoko’
                  Weeping, Pendula  Picea omorika ‘Pendula’
           Sitka  Picea sitchensis
           White, Canadian   Picea glauca
                  Dwarf White, Dwarf Alberta  Picea glauca ‘Conica’
                  Weeping White, Weeping Alberta  Picea glauca ‘Pendula’
           Wilson's  Picea wilsonii
Spurge
            Japanese Spurge, Pachysandra,    Pachysandra terminalis
           Spurge Laurel  Daphne laureola
Stewartia
           Japanese  Stewartia pseudocamellia
           Korean  Stewartia koreana
           Rostrata  Stewartia rostrata
           Tall  Stewartia monadelpha
Stranvaesia
           Chinese  Photinia davidiana    syn. Stranvaesia davidiana
Strawberry
           Barren   Waldsteinia fragariodes
           Sand, Beach or Chilean   Fragaria chiloensis
Strawberry Bush
           Strawberry Bush, American Euonymus, Hearts-a-Burstin'  Euonymus americanus
Strawberry Tree
           Strawberry Tree  Arbutus unedo
Sugar Bush
           Sugar Bush, Sugar Sumac  Rhus ovata
Sumac
           African  Rhus lancea
           Fragrant  Rhus aromatica
                  Gro-Low Fragrant  Rhus aromatica ‘Gro-Low’
           Lemonade, Lemonade Berry  Rhus integrifolia
           Skunkbush  Rhus trilobata
           Smooth, Western, Rocky Mountain, Red  Rhus glabra
           Staghorn  Rhus typhina
                  Laciniate or Laceleaf Staghorn  Rhus typhina  ‘Laciniata’
           Sugar, Sugar Bush  Rhus ovata
Summersweet
           Summersweet, Sweet Pepperbush  Clethra alnifolia
Sun Rose
           Common   Helianthemum nummularium
Swamp Doghobble
           Swamp Doghobble, Sweetbells Leucothoe, Fetterbush   Leucothoe racemosa  (syn. Eubotrys racemosa)
Sweet Alyssum
           Sweet Alyssum   Lobularia maritima
Sweetbells
           Sweetbells Leucothoe, Swamp Doghobble, Fetterbush   Leucothoe racemosa  (syn. Eubotrys racemosa)
Sweet Box  (Sarcococca)
           Sweet Box, Fragrant Sarcococca  Sarcococca confusa
           Himalayan  Sarcococca hookeriana
          Himalayan Sweet Box, Himalayan Sarcococca  Sarcococca hookeriana var. humilis
Sweetbush (Sweetshrub), (Calycanthus)
         Common, Carolina Allspice  Calycanthus floridus
         Hartlage Wine, Hartlage Wine Allspice      Calycanthus raulstonii ‘Hartlage Wine’
         Raulston's, Raulston's Allspice    Calycanthus raulstonii ‘Hartlage Wine’
         Western  Calycanthus occidentalis
Sweetgale
           Sweetgale, Bog Myrtle  Myrica gale
Sweetgum
          American   Liquidambar styraciflua
          Formosan    Liquidambar formosana
          Oriental   Liquidambar orientalis
Sweetspire
          Sweetspire   Itea virginica
          Virginia   Itea virginica
Sweet Woodruff
           Sweet Woodruff   Galium odoratum
Sycamore
           California  Platanus racemosa
           Hybrid or European (London Planetree)  Platanus × acerifolia
Taiwania
           Taiwania  Taiwania cryptomerioides
Tamarack
           Tamarack, Eastern Larch, American Larch  Larix laricina
Tamarix
           Athel (Athl, Tarfa)  Tamarix aphylla
           Small-flowered   Tamarix parviflora
Tawhiwhi     see Pittosporum
Tea Olive
           Delavay Osmanthus, Delavay Tea Olive  Osmanthus delavayi
           Fragrant, Sweet Osmanthus  Osmanthus fragrans
           Holly Osmanthus, Holly Tea Olive  Osmanthus heterophyllus
Ternstroemia
           Japanese Ternstroemia   Ternstroemia gymnanthera
Thimbleberry
           Thimbleberry   Rubus parviflorus
Thrift
           Sea Thrift, Sea Pink  Armeria maritima
Tickseed
           Coreopsis grandiflora  
Tobira
           Japanese Mock Orange, Tobira, Japnese Pittosporum  Pittosporum tobira
Toothache Tree
            Toothache Tree, Prickly Ash,   Zanthoxylum americanum
Torchlily
           Torchlily, Red-hot Poker   Kniphofia uvaria
Totara
           Alpine  Podocarpus nirvalis
           Lowland, Totara  Podocarpus totara
           Blue Gem Tasmainian Totara  Podocarpus aplinus 'Blue Gem'
Tree of Heaven
           Tree of Heaven   Ailanthus altissima
Trifoliage Orange
           Flying Dragon  Poncirus trifoliata ‘Flying Dragon’
           Trifoliage, Hardy or Bitter Orange  Poncirus trifoliata
Trumpet Creeper, Trumpet Vine
           Common Trumpet Creeper, Trumpet Vine   Campsis radicans
Tulip
           Tulip  Tulipa spp.
Tuliptree
           Chinese  Liriodendron chinense
           Pink, Campbell Magnolia, Campbell's Magnollia  Magnolia campbellii
           Tuliptree, Yellow Poplar, Tulip Poplar  Liriodendron tulipifera
Tupelo
           Black Tupelo, Sour Gum, Black Gum, Pepperidge   Nyssa sylvatica
Tutsan
           Tutsan   Hypericum androsaemum
Twinberry
           Twinberry, Black Twinberry, Inkberry   Lonicera involucrata
Umbrella Pine
           Umbrella Pine   Sciadopitys verticillata
Varnish Tree
           Japanese, Chinese Parasol Tree, Phoenix Tree   Firmiana simplex
Verbena
           Brazilian   Verbena bonariensis
Viburnum
           American Cranberrybush  Viburnum trilobum
                  Dwarf or Compact  Viburnum trilobum ‘Compactum’
           Arrowwood  Viburnum dentatum
                  Chicago Lustre® Arrowwood  Viburnum dentatum Chicago Lustre®
           Blackhaw  Viburnum prunifolium
           Burkwood  Viburnum × burkwoodii
                  Conoy  Viburnum × burkwoodii ‘Conoy’   (syn. Viburnum ‘Conoy’)
           Cinnamon   Viburnum cinnamomifolium
           David  Viburnum davidii
           Dawn Bodnantense   Viburnum × bodnantense ‘Dawn’
           Doublefile  Viburnum plicatum var. tomentosum
           European Cranberrybush  Viburnum opulus
                  Dwarf  Viburnum opulus ‘Nanum’
                  Yellow or Golden-fruited  Viburnum opulus ‘Xanthocarpum’
           European Snowball   Viburnum opulus ‘Roseum’
           Fragrant   Viburnum farreri
           Japanese Snowball  Viburnum plicatum
           Judd  Viburnum × juddii
           Koreanspice  Viburnum carlesii
           Laurustinus   Viburnum tinus
           Leatherleaf   Viburnum rhytidophyllum
           Mooseberry, Squashberry, Highbush Cranberry  Viburnum edule
           Nannyberry, Sheepberry  Viburnum lentago
           Onondaga, Onondaga Sargent  Viburnum sargentii 'Onondaga'
           Oregon  Viburnum ellipticum
           Prague  Viburnum × pragense
           Rusty Blackhaw  Viburnum rufidulum
           Sandankwa, Sandanqua  Viburnum suspensum
           Sargent  Viburnum sargentii
           Sweet  Viburnum awabuki   (syn. Viburnum odoratissimum var. awabuki)
           Tea  Viburnum setigerum
           Wayfaringtree   Viburnum lantana
           Western Wayfaringtree  Viburnum ellipticum
           Witherod, Withe-rod   Viburnum cassinoides
Virginia Creeper
           Virginia Creeper    Parthenocissus quinquefolia
Virginsbower  see Clematis
Wahoo
           Eastern  Euonymus atropurpureaus
           Wahoo, Straberry Bush, "Hearts-a-Burstin"  Euonymus americanus
Wallflower
           Common   Cheiranthus cheiri
Walnut
           Black  Juglans nigra
           English or Persian  Juglans regia
           Japanese  Juglans ailantifolia
           Southern California  Juglans californica
           Texas, Little  Juglans microcarpa
Waxmyrtle
           Pacific Waxmyrtle, California Waxmyrtle   Myrica californica
Weigela
           (Early) Weigela  Weigela praecox
                  Korean Sunset  Weigela praecox ‘Korean Sunset’
           Weigela   Weigela florida
Willow
           Corkscrew, Contorted   Salix matsudana ‘Tortuosa’
           Dapple   Salix integra ‘Hakuro Nishiki’
           Desert Willow  Chilopsis linearis
           Golden Curls Corkscrew   Salix ‘Golden Curls’  (syn. S. matsudana ‘Golden Curls’ and S. erythroflexuosa)
           Kilmarnock   Salix caprea ‘Kilmarnock’
           Purpleoiser, Alaska Blue   Salix purpurea
           Laurel, Bay   Salix pentandra
           Weeping Goat, Weeping Pussy   Salix caprea ‘Kilmarnock’
Winterberry
           Winterberry, Winterberry Holly  Ilex verticillata
                  Winter Red  Ilex verticillata ‘Winter Red’
Wintergreen
           Miquel's Spicywintergreen  Gaultheria miqueliana
           Wintergreen  Gaultheria procumbens
Winterhazel
           Winterhazel  Corylopsis
                  Buttercup  Corylopsis pauciflora
                  Spike  Corylopsis spicata
Winter's Bark
           Winter's Bark  Drimys winteri
Wintersweet
           Fragrant Wintersweet   Chimonanthus praecox
Wisteria
           Chinese  Wisteria sinensis
           Japanese  Wisteria floribunda
Witchhazel
           Common   Hamamelis virginiana
           Hybrid   Hamamelis × intermedia
           Vernal, Ozark   Hamamelis vernalis
Woadwaxen
           Lyida   Genista lydia
           Silkyleaf   Genista pilosa
Wormwood
           Silvermound   Artemisia schmidtiana ‘Silver Mound’
Yarrow
           Yarrow   Achillea millefolium
Yellowwood
           American   Cladrastis kentukea
Yew
           Anglojapanese (Hybrid Yew)   Taxus × media
           Canadian  Taxus canadensis
           English  Taxus baccata
           Irish  Taxus baccata ‘Fastigiata’
           Hybrid  Taxus × media
                  Bean Pole   Taxus × media 'Bean Pole'
                  Hicks   Taxus × media 'Hicksii'
                  Taunton   Taxus × media 'Tauntonii'
           Japanese  Taxus cuspidata
                  Cross Spreading  Taxus cuspidata 'Cross Spreading'
                  Dwarf Bright Gold  Taxus cuspidata 'Dwarf Bright Gold'
                  Emerald Spreader^TM  Taxus cuspidata 'Monloo'
                  Golden  Taxus cuspidata 'Capitata Aurea'
           Pacific or Western  Taxus brevifolia
           Spreading   Taxus baccata ‘Repandens’
           Standish  Taxus baccata ‘Standishii’
Yucca  (Yucca)
           Soapweed Yucca  Yucca glauca
Zelkova
           Japaneses Zelkova  Zelkova serrata