Blueberry

Vaccinium corymbosum · Tree/Shrub

A fruiting shrub that needs strongly acidic soil to thrive. Plant two or more varieties for better pollination; the bonus is white spring flowers and red autumn leaves.

Care at a glance

Light

Full sun, at least 6 hours

Water

1–2 in per week; shallow roots dry out fast

Soil

Acidic, moist, well-drained, high in organic matter, pH 4.5–5.5

Temperature

Highbush types need winter chill; hardy to about −20 °F

Spacing

4–6 ft apart, rows 8–10 ft apart

Container

At least 15 gallons, with ericaceous mix

Harvest

Midsummer; first good crop in year 3 (estimated)

Lifespan

Perennial; productive for decades

When?

Plant in early spring or autumn. Test soil pH a season ahead, since lowering it takes time (estimated).

Step by step

1. Test soil pH; work in sulphur and peat-free acidic compost if it is above 5.5.
2. Plant at least two varieties near each other for better fruit set.
3. Set plants at the same depth as in the pot.
4. Mulch 2–4 in with pine bark or wood chips.
5. Water with rainwater where tap water is hard.
6. Remove flowers in the first year so the plant builds roots.
7. From year 4, cut out a few of the oldest canes each winter.

Common problems

Pets

Blueberry is generally considered non-toxic to cats and dogs. If in doubt, ask your vet.

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