Highbush Cranberry

Viburnum opulus

Adoxaceae

• Full Sun to Part Shade 
• Size: 8’-12' tall x 8'-12' wide 
• Drought Tolerant: Low to moderate — prefers consistent moisture; tolerates occasional dry spells once established
• Evergreen: no
• Flower Color: White lacecap flower clusters (May–June)
• Birds (robins, Cedar Waxwings, thrushes) consume the bright red berries in fall and winter; flowers support native bees and pollinators

Viburnum opulus is a large, multi-stemmed deciduous shrub native to Europe, northern Africa, and central Asia, long cultivated as an ornamental for its showy flower clusters, brilliant fall berry display, and outstanding autumn foliage color. It is well adapted to Spokane's climate, tolerating cold winters and moderate summer drought once established, and grows best in moist, organically rich, well-drained soil. Full sun produces the best flowering and berry set, though it performs adequately in part shade. It is tolerant of a range of soil types but dislikes prolonged waterlogging. In the landscape, it grows into a substantial, multi-stemmed, broadly rounded shrub requiring ample space to reach its full, graceful form.

This shrub is highly ornamental across three seasons. In May and June it produces large, flat-topped lacecap flower clusters (3–4 inches across) composed of an outer ring of large, showy sterile white flowers surrounding a central cluster of smaller fertile flowers — a design that maximizes insect visibility while conserving nectar for effective pollinators. The opposite, maple-like three-lobed leaves turn outstanding shades of orange, red, and deep purple-red in autumn. The brilliant red berries (drupes) that follow the flowers in late summer and early fall persist into winter, providing critical food for wildlife and a vivid display against the bare winter landscape. Popular cultivars include 'Compactum' (4–5 ft), 'Roseum' (snowball form with sterile flowers), and 'Nanum' (a compact dwarf selection).

An important distinction for customers: Viburnum opulus is the European species, and its berries are quite bitter and generally considered inedible for humans. The closely related native American species, V. opulus var. americanum (formerly Viburnum trilobum), produces berries that, while tart, are edible and were widely used by Indigenous peoples across North America — including interior and coastal tribes — for food, made into preserves, jellies, and dried berry cakes. The bark of both species has been used medicinally as 'Cramp Bark' to relieve menstrual and stomach cramps. Wildlife use the berries of both species similarly; Cedar Waxwings, robins, and thrushes are the principal seed dispersers and most avid consumers of the fall berry crop.

In the Spokane landscape, Viburnum opulus serves well as a medium to large screen, hedge, or specimen shrub in moist areas of the garden. It is particularly effective along property boundaries, at pond or stream edges, or as a backdrop for a mixed shrub border. If sourcing for wildlife value and edible berries, consider specifying V. opulus var. americanum (American Cranberrybush) or the cultivar 'Wentworth,' which is selected from wild American plants and bears more flavorful fruit. Excellent companions include Blue Elderberry (Sambucus nigra cerulea), Nootka Rose (Rosa nutkana), Birch Leaf Spirea (Spiraea betulifolia), and Snowberry (Symphoricarpos albus). The shrub is susceptible to viburnum leaf beetle — inspect at purchase and monitor regularly.