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Wasowski, Sally and Andy

Viburnum rufidulum

Viburnum rufidulum Raf.

Rusty Blackhaw Viburnum, Rusty Blackhaw, Southern Blackhaw, Blackhaw, Bluehaw, Downy Viburnum, Southern Nannyberry, Rusty Nannyberry, Nannyberry

Caprifoliaceae (Honeysuckle Family)

Synonym(s): Viburnum prunifolium var. ferrugineum, Viburnum rufidulum var. margarettiae, Viburnum rufotomentosum

USDA Symbol: VIRU

USDA Native Status: L48 (N)

This viburnum is a shrub or tree, usually growing to 18 ft. but sometimes taller with bark separating into dark, rectangular plates. Twigs reddish brown with a thin light gray coating. Leaves in pairs, often on short spurs, the petioles covered with rust colored, branched hairs visible under a l0x hand lens; blades up to 3 1/2 inches long, elliptic to oval or ovate, tip rounded or with a broad point, base rounded or broadly wedge shaped, margins finely serrate, firm textured with a shiny upper surface. Glossy, dark-green, deciduous leaves turn a variety of warm hues in autumn. Flowers white, from 1/4 to 3/8 inch wide, in rounded or flattened clusters up to 4 inches wide, appearing in March and April and noticeable from a distance in early spring. Fruit fleshy, bluish black lightened by a waxy coating, up to 1/2 inch long, slightly longer than wide.

Rusty Blackhaw is distinguished from the more northerly Blackhaw, Viburnum prunifolium, primarily by the reddish-brown hairs on foliage and other parts, as well as by the slightly larger leaves and paler blue fruit. The Latin species name, meaning "reddish," also refers to the hairs. The two species intergrade where their ranges meet.

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