Blueberry

Vaccinium

Also known as: highbush blueberry, half-high blueberry, rabbiteye blueberry, Vaccinium corymbosum

Blueberry

How do you care for a blueberry?

Light: Full sun. Plants tolerate partial shade, but yield and fruit quality may be lower. Clemson Extension advises full sun for container blueberries. Water: Roots are shallow and prone to drought injury. Keep the root zone evenly moist, but roots suffocate if waterlogged for more than a few days. It is not listed as toxic to cats and dogs.

About Blueberry

Blueberries are acid-loving shrubs in the heath family; highbush blueberry (Vaccinium corymbosum), native to eastern North America, grows 1.8–3.7 m (6–12 ft) tall in the ground. For containers, Oregon State University Extension recommends a 57–76 L (15–20 gal) pot or half a wine barrel for northern highbush and at least 38 L (10 gal) for half-high cultivars, which mature at 0.6–1.2 m (2–4 ft). The mix must drain well and stay acidic, at pH 4.5–5.5, so avoid potting soils with lime or a high proportion of compost. Grow two or more cultivars that bloom together: cross-pollination gives larger berries and higher yields.

Blueberry quick facts

Botanical name
Vaccinium
Family
Ericaceae (heath family)
Native to
Eastern North America (highbush blueberry)
Light
Full sun. Plants tolerate partial shade, but yield and fruit quality may be lower. Clemson Extension advises full sun for container blueberries.
Container size
57–76 L (15–20 gal) or half a wine barrel for northern highbush; 38 L (10 gal) or larger for half-highs. The pot needs drainage holes.
Potting mix
50–80% well-aged fine bark, 10–40% peat moss and about 10% perlite or pumice, at pH 4.5–5.5. No lime and little compost.
Water
Roots are shallow and prone to drought injury. Keep the root zone evenly moist, but roots suffocate if waterlogged for more than a few days.
Pollination
Plant at least two cultivars of the same type. Half-high and rabbiteye cultivars set little or no fruit on their own.
Frost
Open flowers are damaged at −2 °C (28 °F). Container plants can be moved indoors during a frost at bloom.
Cats and dogs
Not listed as toxic. The ASPCA has no entry for blueberry, and NC State Extension lists no toxicity for highbush blueberry, which is grown for its edible fruit. Source: NC State Extension

Sources: Oregon State University Extension: Growing Blueberries in Your Home Garden (EC 1304); Clemson Cooperative Extension HGIC: Blueberry (HGIC 1401); NC State Extension: Vaccinium corymbosum

Blueberry care at a glance

Light
Bright indirect. Prefers bright, indirect light. Keep out of harsh direct afternoon sun — it can scorch the leaves. Grow lights: Thrives under artificial grow lights (LED or fluorescent, 10-12 hours/day). A great option if your space lacks natural light.
Watering
Likes consistently moist (not soggy) soil. Water when the top inch feels dry. Don't let it dry out completely.
Humidity
Appreciates some humidity but adapts to average home conditions. Brown tips in winter? Your air might be too dry — a light misting helps.
Temperature
Prefers moderate temperatures (60-80°F). Keep away from radiators and intense afternoon sun windows.
Soil
Standard well-draining potting mix works well. Add perlite for extra drainage if you tend to overwater.
Pets
The ASPCA has no entry for blueberry, and NC State Extension lists no toxicity for highbush blueberry, which is grown for its edible fruit.
Difficulty
Beginner friendly

Common blueberry problems, answered

Questions about Blueberry

Is blueberry toxic to cats and dogs?

The ASPCA has no entry for blueberry, and NC State Extension lists no toxicity for highbush blueberry, which is grown for its edible fruit.

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