EARLY SPRING ACTIVITY

What you might see

January February March April May June July August September October November December

Pest and Plant Phenological Activity

Calendar date	Degree Days (base= 41 F)	Plant/pest activity	Plant/Pest image	Phenological Event
Early February	137	Carnation tortrix		larval stage feeding on buds
Early February	147	Bumble bee		Active and foraging
Early February	147	Genista pilosa 'Vancouver Gold'		full bloom
Early February	147	Dark-face arion, Arion distinctus		Active and feeding
Early February	147	Witch hazel, Hamamelis × intermedia		full bloom
Early February	147	Glass snail, Oxychilus		Active and feeding
Early-mid February	147	Milky slug, Deroceras reticulatum		Active and feeding
Early February	168	birch aphid, Euceraphis betulae		egg hatch
Mid- February	180	Carabid beetle		Active, benefical predatory beetle
Mid- February	196	Heather, Erica		full bloom
Mid- February	205-210	Springtail		adults, often found when sampling. Generally not a pest (a few limited exceptions - seedling crops)
Mid-late February	210-215	Forsythia		full bloom
Late February	218	Crocus		beginning bloom
Early March	241	Western conifer seed bug, Leptoglossus occidentalis		structural invader - emerging from overwintering
Early March	262	Earwigs, Forficula auricularia		adults active
Early March	265	Powdery mildew on manazanita		active
Early March	304	Powdery mildew on lamb's ears, Neoerysiphe galeopsidis		active
Mid-March	319	Paper wasps		Adults
Mid- March	357	Painted lady beetle, Mulsantina picta (tentative ID)		Adult on spruce
Mid- March	399	Lace bug on indian plum, Oemelaria		Adults active
Mid- March	399	Saucer magnolia, Magnolia x soulangeana		Beginning bloom
Late March	467	Marsh Slug, Deroceras laeve		Active
Late March	467	'Mt. Hood' daffodils		Full bloom
Late March	467	Saucer magnolia, Magnolia x soulangeana		Full bloom
Late March	467	European red slug, Arion rufus		Active
Late March	476	Carpentar ants, Camponotus modoc		active
Late March	505	Cinara aphids on spruce		active

Website editor:
Robin Rosetta