Today’s Special is our European Snowball Viburnum, Viburnum opulus ‘Roseum’.
Easily grown in average, medium moisture, well-drained soil in full sun to part shade. Prefers loams with consistent moisture, but tolerates a wide range of soils. Species plants sometimes grow in wet or boggy soils in its native habitat. Prune as needed immediately after flowering.
Viburnum opulus, commonly called European cranberry bush, is a highbush cranberry that is native to Europe, Asia and N. Africa. It is a deciduous shrub with a rounded spreading habit that typically grows to 10-15′ tall. It features lacecap-type white flowers in spring in flat-topped 3″ wide cymes of tiny fertile florets surrounded by larger sterile florets, drooping clusters of cranberry-like red berries (drupes) in fall and three lobed, maple-like, dark green leaves. By contrast, ‘Roseum’ is a sterile cultivar (no fertile florets and no cranberry-like fruit) that produces 3″ diameter pom-pom-like globular inflorescences (snowballs) of entirely sterile white flowers. Flowers bloom in May. Flowers acquire light rose flushing as they fade, hence the cultivar name of ‘Roseum’. Plants typically grow to 10-12′ tall with a rounded form. Sugar-maple like leaves are a soft green, generally becoming orange-red in fall. ‘Roseum’ is sold under a large number of common names. The common name of European snowball bush has been selected herein because ‘Roseum’ produces no cranberry-like fruit as suggested by the common name for the species (European cranberry bush). ‘Roseum’ is synonymous with and sometimes sold in commerce as V. opulus ‘Sterile’. Zones 3 to 8.