Canadian barberry

Photo: Wikimedia Commons — CC BY-SA 3.0 · source

Survives zone 4 through 8

Harvest calendar

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

America's own barberry, and a rarer plant in the wild than its Eurasian and Japanese relatives. Fruit is agreeably acid — sharp raw, better as jelly or in preserves; the young leaves are a pleasant sour trailside nibble and the flowers are edible too.

Hardiness

Zone 4–8

Habit

Shrub

Edible part

Fruit, Leaf, Flower

Ripens

August

Mature size

Spiny shrub to 1.8 m, medium growth rate

Light

Full sun to light woodland shade

Soil pH

5.5–8.0 (mildly acid to mildly alkaline)

Environment

Temperate

Native range

Eastern North America — Virginia to Georgia and west to Indiana, on stream banks, dry woods and rocky slopes at 100–700 m.

Status

Wild

Years to fruit

2–3 yrs

Growth speed

10–20 cm/year — slow to medium; the band hedging growers quote for compact deciduous barberries of this size.

Spacing

100 cm (39 in) apart — about 1 m² (11 sq ft) per plant

Leaf shape

Narrowly obovate to elliptical, 1.5–4 cm long, borne in clusters above the spines; bright green above, paler and slightly glaucous beneath, the margins finely bristle-toothed.

Root system

Spreads by rhizomes, throwing suckers to form clonal stands rather than relying on a single deep root — the reason wild colonies are often one plant many times over.

Fruit description

Glossy red, egg-shaped berries about 8 mm long in short drooping clusters; sharply acid raw, ripening in late summer and often hanging on the bare bush into the following spring.

Propagation

Seed after 2–6 weeks cold stratification at about 4°C, sown spring or autumn. Semi-ripe nodal, heel or mallet cuttings 10–15 cm long taken from midsummer into autumn root over a few months. Rooted suckers can also be separated from the parent clump.

Pollination

Self-fertile and largely self-pollinating: the touch-sensitive stamens snap inward when an insect's tongue brushes the nectar glands at their base, pressing pollen onto the visitor, and in the absence of insects the anthers usually meet the stigma as the flower withers. Isolated plants crop well without a partner.

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.