Viburnum opulus var. opulus
European Cranberrybush Viburnum
vi-BER-num OP-u-lus OP-u-lus
Native to (or naturalized in) Oregon:
- 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/)
- A similar species that is native to North America is Viburnum trilobum [American Cranberrybush Viburnum], but more recently this plant is classified as a variety (varietas, var.) of Viburnum opulus and designated Viburnum opulus var. americanum. Here are a few differences between V. o. var. opulus and V. o. var. americanum. In addition, Sargent Viburnum (Viburnum sargentii) is also now classified as a variety of Viburnum opulus, hence Viburnum opulus var. sargentii.
- There are several cultivars of V. opulus var. opulus, including:
- opulus: a reference to its name "Opulus of Dioscorides" given by Jean Ruel (1474-1537), French botanist.
- Oregon State Univ. campus: west side of Gilbert Hall.