Photo: Unknown — Public domain · source
Survives zone 2 through 6
Harvest calendar
Best planted in early spring after your last frost, or in fall before the ground freezes, depending on your climate.
The true wild blueberry of Maine and Atlantic Canada — smaller-fruited and more intensely flavored than highbush, traditionally harvested from sprawling rhizome colonies ("barrens") rather than grown as individual planted bushes.
- Hardiness
- Zone 2–6
- Habit
- Shrub
- Edible part
- Fruit
- Ripens
- July–Sept
- Mature size
- Low deciduous shrub 5–60 cm, spreading into colonies by rhizome; excellent in containers, which also keeps the compost acid
- Light
- Full sun
- Soil pH
- 4.0–5.5 — ⚠ STRICTLY ACID-LOVING (calcifuge). Will die on alkaline soil; use ericaceous compost + rainwater
- Environment
- Boreal
- Native range
- Central & eastern Canada — Newfoundland, Nova Scotia, New Brunswick, Prince Edward Island, Quebec, Ontario, Manitoba, Labrador — south into the northeastern and north-central US (Maine, New Hampshire, Vermont, New York, Michigan, Wisconsin, Minnesota), with scattered populations south to Tennessee, North Carolina and Virginia at higher elevations. The commercial heartland is Maine and Atlantic Canada.
- Status
- Both wild and cultivated
- Years to fruit
- 2–3 yrs
- Growth speed
- Slow to spread — commercial plantings at 30 cm spacing typically take 3–5 years to fill in via rhizome spread.
- Spacing
- 30 cm (12 in) apart — about 11 per m² (10 per 10 sq ft)
- Leaf shape
- Elliptic to lanceolate or ovate, 2.5–7.5 cm, glossy and hairless, margins entire or finely toothed.
- Root system
- Shallow, fibrous, rhizomatous — woody rhizomes concentrated in the top 10–15 cm of soil forming clonal colonies, with deeper feeder roots to about 90 cm; roughly 70% of total plant biomass is below ground; requires acidic soil.
- Fruit description
- Small berries under 2.5 cm, light powdery blue to nearly black at full ripeness; smaller and sweeter than highbush blueberries, with an intense classic wild-blueberry flavor.
- Propagation
- Commercial fields are established and spread by rhizome division rather than planted as individual bushes; also grown from softwood cuttings in spring, hardwood cuttings of the previous season's unbranched shoots, or seed (60–90 days of cold stratification at 41°F on an acidic mix).
- 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
Fertilizing. Prefers ammonium-form nitrogen (ammonium sulfate or urea, not nitrate) like the rest of the genus; feeding measurably speeds rhizome spread and ground coverage during the first 2–3 years after planting.
How it spreads. Strongly rhizomatous, spreading underground into colonies that can reach several meters across over decades — the classic "wild blueberry barren" habit, and a sharp contrast to highbush's upright, clump-forming growth.
Growing tips. Managed wild fields run on a two-year burn-or-mow cycle, alternating a fruiting "crop year" with a pruning/regrowth year, and full field coverage from bare rhizome can take up to 6 years. Mummy berry (Monilinia vaccinii-corymbosi) is the most serious disease across highbush, lowbush and rabbiteye blueberries alike.
Grow journal
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