Viburnum opulus (syn. Viburnum opulus var. opulus)
European Cranberrybush Viburnum, Guelder-rose
- Broadleaf deciduous shrub, 8-12 ft (2.1-3.5 m), upright, spreading, arching branches. Leaves
opposite, 5-10 cm long, as wide or wider, with pointed lobes, a few disk-like glands on grooved petiole.
May develop yellow-red or reddish-purple colors in fall. Flowers white, in 5-5.5 cm flat-topped
clusters (cymes), those in the outer ring are 2 cm across, showy, and sterile; the inner ones are fertile,
inconspicuous, with yellow anthers. Fruit is globose, 6 mm diam., bright red in fall, may persist
into winter as red "raisins".
- Sun to part shade. One of the easiest viburnums to grow, but often infested with aphids.
Adaptable to extremes of soil and pH. Fruits best in full sun.
- Hardy to USDA Zone 3 Native to Europe, including Britain, northern
Africa and northern Asia. Cultivated from at least the 17th century. Caution:
It has invasive tendencies and it is found in the wild from Newfoundland to southern British Columbia and
south to Virginia, eastern Nebraska, western South Dakota, Wyoming, Idaho and Washington. (http://www.invasive.org/)
- The similar species native to North America is Viburnum trilobum
[American Cranberrybush Viburnum], but more recently this plant is classificed as a variety (varietas, var.) of Viburnum opulus (ie., Viburnum
opulus var. opulus), and designated Viburnum opulus var. americanum.
- opulus: a reference to its name "Opulus of Dioscorides" given by Jean Ruel (1474-1537),
- Oregon State Univ. campus: west side of Gilbert Hall.