Viburnaceae

blackhaw

Viburnum prunifolium

blackhaw

Photo: Robert H. Mohlenbrock. USDA SCS — Public domain · source

2
3
4
5
6
7
8
9

Survives zone 3 through 9

Harvest calendar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.

Genuinely edible raw, unlike most viburnums in this catalog — no cooking required and no known toxicity. Quality varies by individual plant: the best have thin, sweet, date- or prune-like flesh with a faint smoky note, while others lean bitter and astringent and are better suited to preserves. Best picked after the first frost, which sweetens it. Leaves have also been used for tea.

Hardiness
Zone 3–9
Habit
Shrub
Edible part
Fruit
Ripens
Aug–Sept
Mature size
Shrub 2–4 m; containerable when young
Light
Full sun to partial
Soil pH
5.5–7.0
Environment
Temperate
Native range
Eastern and central United States — Connecticut west to Michigan and Kansas, south to Georgia and Texas — along forest edges, streambanks, old fields and open woodland.
Status
Both wild and cultivated
Years to fruit
2–3 yrs
Growth speed
Slow — 30 cm a year or less
Spacing
300 cm (118 in) apart — about 9 m² (97 sq ft) per plant
Leaf shape
Opposite, ovate to elliptic 3–8 cm, finely toothed, glossy dark green with a reddish leaf stalk, turning deep red-purple in autumn. Plum-like in outline, which is what prunifolium records.
Root system
Shallow and fibrous, suckering from the base into a multi-stemmed clump, with low branches layering where they rest on the ground. Nothing deep, so it wants mulch and resents drought, but a lifted rooted sucker is a free plant.
Fruit description
Oval blue-black drupes to about 1.5 cm, in flat clusters, ripening September–October with a pale waxy bloom. Sweet and date- or prune-like at full ripeness — one of the genuinely good raw viburnums — over a single flat stone, and better still after a frost.
Propagation
Softwood cuttings in early summer, though they root slowly for a viburnum; seed has double dormancy and takes two years; suckers can be lifted with roots attached.
Pollination
Self-fertile but BETTER WITH A PARTNER — plant 2 cultivars

The edible parts listed above are a starting point, not a field guide. Identify a plant with certainty — ideally against a local authority — before eating any part of it, and read the full disclaimer. Spotted something wrong? Report it.

Growing guide

Fertilizing. Low feeding needs; tolerates poor, dry, and clay soils without supplemental fertilizer, though a spring compost mulch or balanced fertilizer can help young plants establish.

How it spreads. A suckering shrub that can form thickets as it matures, though it spreads at a slow to moderate rate.

Growing tips. No serious pest or disease problems. Flowers form on old wood, so prune immediately after flowering to avoid removing next year's blooms. Notably tolerant of black walnut (juglone) toxicity, a rare trait that makes it usable near black walnut trees.

Grow journal

Sign in to keep a dated log of when you planted, bloomed and harvested this plant.

About the data

Zone figures are typical published ranges — microclimate, drainage and siting shift them by a zone in either direction. Store links are found by an automated search, refreshed every six weeks. Availability is seasonal; stock and prices are not tracked.

Venlo — a reference for cold-hardy edible plants