Blueberry
Highbush Blueberry, Lowbush Blueberry, Rabbiteye Blueberry, Southern Highbush, American Blueberry, Blueberry, New Jersey Blueberry
Requires very acidic soil (pH 4.5–5.5) — test and amend with sulfur before planting. Plant two or more varieties for cross-pollination and larger yields. Mulch 4–6" deep with wood chips or pine bark to maintain acidity and moisture. Prune in late winter, removing oldest canes. Plants reach full production in 5–7 years and can live for decades. Do not rush harvest — berries continue sweetening after they turn blue.
- Spacing
- 120–185 cm
When to plant blueberry
Plant 2–6 weeks before your last spring frost.
Dashed line: typical last spring frost in zone 7 (Apr 5). Zone dates are averages; most of the UK is zone 8–9, central Europe 6–7 and the Baltics and Scandinavia 4–6. In the app, Tomatograph uses your garden's own frost dates.
How to grow blueberry
- 1
Fix the soil first
Blueberries need very acidic soil, around pH 4.5–5.5. Test before planting and lower the pH with sulphur, or grow in pots of ericaceous compost.
- 2
Plant
Plant in early spring, at least two different varieties for better pollination and bigger crops.
- 3
Mulch and water
Mulch 10–15 cm deep with pine bark or wood chips and water with rainwater where tap water is hard.
- 4
Harvest
Plants reach full production in 5–7 years. Pick berries a few days after they turn blue; they keep sweetening on the bush.
Growing conditions
Light
Full sun
Water
Medium water
Temperature
-30–30 °C
Frost tolerance
Frost-hardy — tolerates frost
Days to maturity
730–1460 days
Ideal soil pH
4.7–7.5
How Tomatograph watches your blueberry
Tomatograph checks your local forecast every morning and only speaks up when one of these applies to your garden.
- First frost within 14 daysReminder to mulch the roots before winter.
- 3 days at 35 °C or aboveHeat-wave alert while plants are flowering or fruiting: shade and water early.
- Humidity above 80% for 48 hoursCheck for mummy berry, which thrives in those conditions.
- Within a week of maturityHarvest-window reminder based on when you planted.
Blueberry questions
- When should I plant blueberry?
- Plant 2–6 weeks before your last spring frost.
- How far apart should I plant blueberry?
- Allow 120–185 cm between plants.
- What grows well with blueberry?
- Good neighbours include strawberry, rhododendron, azalea.
Growing guide written by Tomatograph. Planting figures from openplantdb (CC0 1.0). Zone frost dates are averages from openplantdb (CC0 1.0).