Blackcap Raspberry

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Other Names:
Whitebark Raspberry, Black Raspberry, Western Black Raspberry
Latin Name:
Rubus Leucodermis
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The Blackcap Raspberry (Rubus leucodermis) is the Pacific Northwest's native black raspberry — a handsome, arching bramble with striking blue-white ("whitebark") canes and richly flavored, hollow-capped dark berries in high summer.2, 4

Edible & Medicinal Uses

These are true raspberries: the deep purple-black fruit pulls free of its core as a hollow "cap," with a deep, winey raspberry flavor that's wonderful fresh and superb in jelly, syrup, and preserves. The tender young shoots (primocanes) were also traditionally peeled and eaten in spring. Blackcap is one of the three most important native brambles of the region, gathered by many nations fresh, dried into cakes, and steeped into a beverage.1, 4

Ornamental Qualities

Beyond the fruit, Blackcap earns a place for its ghostly blue-white arching canes, handsome divided foliage, and clusters of small white flowers. It's thicket-forming and makes excellent wildlife cover in a hedgerow or the wilder corner of an edible garden, alongside Salmonberry and Thimbleberry.4

Environment & Culture

Ecology: Native across western North America from Alaska to Mexico, Blackcap grows in clearings, forest edges, burns, and disturbed ground. Its flowers feed pollinators and its fruit is prized by birds and mammals; its thickets offer nesting cover.1, 4

Culture: A staple berry for many peoples — among them the Coast Salish, Nlaka'pamux, Okanagan, Comox, and Puyallup — eaten fresh, dried into cakes, and made into drinks, with young shoots eaten in spring. We offer it with respect for that knowledge and invite support for Indigenous-led restoration through our Charitable Giving page.1

In the Kitchen

Eat them warm off the cane, or collect enough for the real prize — a jar of intensely flavored blackcap jelly or syrup to pour over pancakes and ice cream. They freeze beautifully for winter baking. In spring, peel and nibble the tender new shoots like a wild vegetable. (Growing and harvest details are on the Planting Guide tab.)5

Attributes

  • Native Range: Western N. America, Alaska to Mexico1
  • USDA Zones: ~5–93
  • Light: Full sun to part shade4
  • Water: Moderate; more fruit with summer water4
  • Soil: Well-drained; adaptable4
  • Habit: Arching, thicket-forming bramble with blue-white canes; biennial canes2
  • Harvest: Dark hollow-capped berries in summer; young shoots in spring4
  • Edible: Rich raspberry flavor — fresh, jelly, syrup4

References

  1. Joe Seals / Indigenous foodways; Moerman, D., Native American Ethnobotany, 1998.
  2. Pojar, J. & MacKinnon, A., Plants of the Pacific Northwest Coast, 2014.
  3. USDA PLANTS Database, Rubus leucodermis.
  4. Native Plants PNW; Sparrowhawk Native Plants, Rubus leucodermis.
  5. "Edible Native Berries," Habitat Horticulture PNW.

Pot Sizing Guide

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Planting Guide: Blackcap Raspberry (Rubus leucodermis)

Tip: Remember the canes are biennial — fruit comes on second-year canes, which then die, so prune out the spent canes each year and let new blue-white ones take over.

When Your Plant Arrives

Open the box promptly and lift your plant out gently, holding the pot rather than the stem. Leave it in its biodegradable eco-pot for now — the roots are settled and don’t need disturbing yet. Give it a slow, thorough drink until water runs through the bottom, then set it somewhere bright but sheltered, out of harsh afternoon sun, drying wind, and frost. Let it rest and acclimate there for a few days before planting, so the move from our greenhouse to your garden is a gentle one. If anything doesn’t look right, please contact customer service within 7 days of delivery and we’ll take care of you.

Choosing a Site

Light: Full sun to part shade.

Soil: Well-drained; adaptable.

Space: 3–4 ft apart; it forms prickly thickets.

Planting Steps

Plant in fall or spring while dormant.

If it came in a biodegradable eco-pot, plant it pot and all — the pot is pressed from composted cow manure, so it melts into the soil and gives the young roots their first feed. No need to remove it.

Set at the depth it grew, backfill, firm, water in, and mulch. Give it room or a wild corner — the canes arch and root where their tips touch the ground.

Watering & Care

Establishment: Water through the first summer.

After establishment: Drought-tolerant, but summer water means more and bigger berries.

Training & Pruning

A black raspberry — it fruits on second-year canes (floricanes). Cut each cane to the ground right after it fruits, and in summer pinch the tips of the tall new primocanes to force fruiting side-branches.

The canes tip-root where they arch to the soil — snip the tips to keep the patch in bounds, or peg them down to make new plants. Wear gloves; the canes are prickly.

Protection

Deer: Browsed; the thorns give some protection.

Wildlife: Flowers for pollinators, fruit for birds, thickets for nesting.

Harvest Basics

Season: High summer; berries are ripe when they pull off as a hollow cap.

Use: Fresh, or into jelly and syrup; peel the young spring shoots as a wild vegetable.