Ericaceae

Cascade blueberry

Vaccinium deliciosum

Cascade blueberry

Photo: Chaleb96 — CC BY-SA 4.0 · source

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Survives zone 4 through 8

Harvest calendar

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

A true wild huckleberry of high Cascade meadows, foraged rather than farmed — described by foragers as sugary sweet with a notably rich aroma when fully ripe.

Hardiness
Zone 4–8
Habit
Shrub
Edible part
Fruit
Ripens
July–Sept
Mature size
Low spreading deciduous shrub 10–40 cm, forming mats
Light
Partial to full sun
Soil pH
4.0–5.5 — ⚠ STRICTLY ACID-LOVING (calcifuge). Will die on alkaline soil; use ericaceous compost + rainwater
Environment
Montane
Native range
British Columbia south through the Cascade Range of Washington and Oregon to the Klamath Mountains and northern Sierra Nevada in California, with isolated populations in eastern Idaho.
Status
Wild
Years to fruit
2–3 yrs
Growth speed
Slow
Spacing
45 cm (18 in) apart — about 4.9 per m² (4.6 per 10 sq ft)
Leaf shape
Thin, oval leaves 1.5–5 cm, mostly smooth-margined, occasionally toothed near the tip.
Root system
Rhizomatous and spreading, forming a dense, matted root system; stems root wherever their nodes touch moist ground, from small clumps to extensive colonies.
Fruit description
Waxy blue or reddish berries just over 1 cm wide with a powdery bloom; sugary sweet with a rich, complex aroma when fully ripe.
Propagation
Seed (sow late winter under glass in a lime-free mix, cold-stratify up to 3 months) or half-ripe cuttings with a heel taken in August, though both are reported as slow and inconsistent; layering in late summer or spring is an alternative.
Pollination
Self-fertile, better with a 2nd cultivar

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

How it spreads. Low, rhizomatous and mat-forming — stems root where they touch moist ground, spreading into expansive colonies in alpine and subalpine meadows.

Growing tips. A true wild huckleberry of Pacific Northwest alpine and subalpine meadows (600–2,000 m), relying on snow cover for winter insulation through its short 3–4 month growing season — not commercially cultivated. Research at the University of Idaho/WSU found it and V. membranaceum are richer in aromatic flavor compounds than domesticated blueberries.

Grow journal

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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