Guelder rose
Also known as
European cranberrybush, Snowball tree, Highbush cranberry, Cramp bark, European guelder-rose
Keep this plant’s care guide close at hand.
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Viburnum opulus (European cranberrybush, guelder rose) is a hardy, deciduous shrub valued for its three-season display and wildlife appeal. Typically 8–15 ft (2.5–4.5 m) tall and wide, it forms a dense, multi-stemmed outline with trifid, maple-like leaves that flush fresh green, color to burgundy-red in autumn, and drop in winter. In late spring, flattened, lacecap-style corymbs of white flowers appear; the showy sterile florets rim a center of fertile blooms adored by pollinators. By late summer, glossy clusters of translucent scarlet drupes follow, often persisting into winter and feeding birds. Native across Europe and into western Asia and North Africa, the species thrives along stream banks, in damp woods, fens, and hedgerows on moist, humus-rich soils. It tolerates periodic wetness better than drought and accepts a range of pH, including calcareous ground. Note that the popular cultivar ‘Roseum’ (“snowball tree”) bears spherical sterile inflorescences and does not set fruit. V. opulus is adaptable in gardens and amenable to pruning after bloom, making it a reliable choice for mixed borders, screens, and naturalistic plantings.
Taxonomy
Properties & Requirements
How to care for Guelder rose
Water
Keep soil consistently moist, especially the first two growing seasons. Provide the equivalent of 1 inch (2.5 cm) of water weekly from rain or irrigation, delivered as a deep soak to wet the root zone 8–12 inches. Mulch 2–3 inches to conserve moisture, keeping mulch a few inches off the stems. Once established, it tolerates short dry spells but fruits and foliage are best with steady moisture. Avoid chronic waterlogging, yet the species tolerates brief flooding and heavy soils.
Light
Full sun to partial shade. Aim for at least 4–6 hours of direct sun daily for best flowering and fruiting; in cool-summer regions, full sun yields the heaviest berry set and richest fall color. In hot or arid climates, provide morning sun with light afternoon shade to limit leaf scorch and water stress. Deep shade drastically reduces bloom and fruit and increases susceptibility to pests like aphids. Maintain good air circulation to minimize foliar disease in humid regions.
Nutrients
Feed lightly. In early spring, top-dress with 1–2 inches of compost or leaf mold to renew organic matter and fuel soil life. If growth is weak on poor soils, apply a slow-release, balanced shrub fertilizer at label rates in spring only. Avoid high-nitrogen products that promote lanky shoots at the expense of flowers and fruit. Do not fertilize after midsummer; late feeding can stimulate tender growth prone to winter injury.
Temperature
Hardy in USDA Zones 3–8. This species is reliably cold-tolerant to about -30 °F (-34 °C) once established. Flower buds can be nipped by late spring frosts in exposed sites, so choose a spot with some protection from cold winds. In hot-summer climates, ensure regular moisture and afternoon shade to prevent stress during spells above 90–95 °F (32–35 °C). Container-grown plants need winter root protection below 10 °F (-12 °C) and should be watered sparingly but not allowed to dry out completely.
