Sunshine Blue blueberry

Sun

Full sun for the best crops; light afternoon shade is helpful in very hot climates.

Water

Keep the shallow root zone consistently moist but not waterlogged, especially during flowering and fruit development. Containers may need daily checks in hot weather.

Soil

Acidic, humus-rich, well-drained soil, ideally pH 4.5-5.5. Use ericaceous potting mix in containers where garden soil is alkaline.

Height

3-4 ft (0.9-1.2 m)

Spread

3-4 ft (0.9-1.2 m)

Flowers

Spring; small, bell-shaped pink flowers, often fading paler.

Foliage

Small, oval, blue-green leaves, sometimes turning reddish-purple in autumn. Evergreen to semi-evergreen in mild climates; may lose most or all leaves in cold winters.

Growth

Slow to moderate

Care needed

Medium

• Pollinators
• Heat tolerant
• Wildlife
• Low allergen
• Edible

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.6 ft (0.5 m)

2. After 1 year

   1.9 ft (0.58 m)

3. After 2 years

   2.2 ft (0.67 m)

4. After 3 years

   2.5 ft (0.75 m)

5. After 5 years

   3 ft (0.92 m)

About 7 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Native to

the US and Canada

Growth rate

Slow

• Water before the root zone dries out; use rainwater where tap water is hard.
• Feed lightly in spring with a fertiliser labelled for blueberries or acid-loving plants; avoid overfeeding.
• Apply 2-3 in (5-8 cm) of pine bark or another suitable organic mulch, keeping it clear of the stems.
• Grow in a large container with drainage holes if your soil is alkaline; do not leave the pot standing in water.
• Cover ripening fruit with securely fitted wildlife-safe netting, checking it regularly for trapped animals.
• Shelter container-grown plants from severe winter cold because their roots are less insulated than roots in the ground.

Pruning. Prune in late winter before growth starts, removing dead, damaged and crossing stems. Once established, remove a little of the oldest wood at ground level each year, retaining strong younger stems and avoiding hard shearing.

Pick berries in summer when they are fully blue, including around the stalk, and come away easily; leaving them a few days after colouring improves sweetness. Harvest repeatedly as the clusters ripen unevenly. Expect the first worthwhile crop about 2-3 years after planting, with larger crops as the bush matures.

Late winter

Prune established bushes lightly and remove dead or damaged stems.

Early spring

Plant when the ground is workable, check soil acidity and apply a light feed.

Spring

Refresh mulch and protect open flowers from forecast late frosts with horticultural fleece.

Late spring

Check moisture frequently as fruit develops; fit netting before berries begin colouring.

Summer

Pick ripe berries regularly and keep containers evenly watered.

Autumn

Remove fallen diseased fruit and leaves, and move exposed pots to a sheltered position before severe cold.

• Use in large patio containers where flowers, foliage and fruit can be enjoyed close up.
• Plant as a low, informal edging around an acidic-soil kitchen garden.
• Group with compact azaleas and other acid-loving shrubs for spring flowers and contrasting foliage.
• Include in a small edible border with other compatible blueberries for a longer picking season.

Garden styles it suits: Edible landscape, Potager (kitchen garden), Small-space, Modern courtyard, Cottage garden and Wildlife garden.

Plant it with: Azaleas, Rhododendrons, Lingonberries, Wintergreen, Japanese pieris and Other southern highbush blueberries.

Wildlife: Flowers provide nectar and pollen for bees, especially bumblebees. Birds eat the berries, and the branching growth offers some shelter for small garden wildlife.

• Yellow leaves with green veins usually indicate iron becoming unavailable in soil that is too alkaline: test pH and correct the growing conditions, or move the plant into ericaceous compost.
• Root rot and dieback can follow waterlogging: improve drainage and never leave containers sitting in water.
• Birds can strip ripening berries: use securely supported wildlife-safe netting and inspect it frequently.
• Spotted wing drosophila can cause soft, leaking berries where this pest occurs: pick promptly, remove overripe fruit and use suitable fine insect mesh after flowering.

Not known to be toxic to people, cats, dogs or horses. Ripe berries are edible; the leaves and woody stems are not normally eaten.

• Bilberry (Vaccinium myrtillus)

  Bilberry has green, angular stems and usually bears individual berries with dark purple flesh; Sunshine Blue bears clusters of berries with pale flesh.

• Rabbiteye blueberry (Vaccinium virgatum)

  Rabbiteye blueberries usually grow much taller and their unripe berries often turn pink before blue. Similar-looking cultivars can be difficult to identify reliably without a label.

The common name blueberry refers to the blue skin of the ripe fruit, while corymbosum refers to its clustered flowers.

Propagation. Take softwood cuttings in late spring or early summer and root them in an acidic, free-draining medium under humid conditions. Seedlings will not reliably retain the characteristics of Sunshine Blue.

Accepted botanical name

Vaccinium corymbosum

In the US and Canada

Native in Canada and the lower 48 states.

Native range

Alabama, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland and Masachusettes.

Measured

Soil pH 4.7 to 7.5. Average height 250 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.