Duke: flavour and growing

What do you want from your garden?

Compare a classic blue harvest with pink Pink Lemonade. A compact potted plant makes acid-loving fruit possible in a garden with lime-rich soil.

Flavour and use

Sweet with refreshing acidity; fully ripe berries have more flavour than those that have only just changed colour.

Choose a suitable spot

Acidic soil or potting compost for acid-loving plants; retain moisture without stagnation. Rainwater is practical where tap water is hard.

From flower to fruit

Many cultivars are partially self-fertile. Different compatible cultivars can increase the harvest.

How to give the plant a place

Potted acid-loving group: Use large pots with drainage. Fill with ericaceous compost. Choose compatible different cultivars. Water with rainwater and taste ripe fruit.

Acid soil bed: Measure pH before planting. Plant in suitable acidic ground. Mulch and maintain even moisture. Place bird-friendly protection over the fruit.

Care throughout the season

Protect ripening fruit; prevent drying out and high pH.

Recognise the right time to pick

Cultivars spread the summer harvest; pick in several rounds.

Follow your own harvest

Save acid soil or pot growing and flowering compatibility; Pink Lemonade ripens pink, so there is no universal black or blue ripeness rule.

Turn your space into a garden for experimenting

Start with the root environment. Blueberries and cranberries need acidic soil; an attractive fruit colour does not solve unsuitable ground. If your garden soil does not suit them, a separate bed or pot with suitable acidic potting compost may be more manageable. Check the watering supply and do not add lime by following a general vegetable-garden recipe. The plant has different soil requirements from many vegetables.

A container makes choosing the soil mixture easier but needs extra attention to watering. Feel below the surface to check whether the root zone is still suitably moist. Do not let a pot dry out for long and check drainage. Growing cranberries is no reason to keep an arbitrary pot permanently submerged; the chosen position must suit the species and growing method.

A blueberry may already have changed colour before its flavour is at its best. Pick in stages and compare a few plump fruits that come away easily. Cranberries, by contrast, remain notably acidic and are often processed. Assess that harvest after preparation too. A pale or pink fruit belongs to its own selection: use the cultivar's final colour rather than the appearance of a standard blueberry.

Which flavour would you like to discover?

Duke: Late flowering, early harvest.

Spartan: Early to mid-season; large, sweet berries.

Ozarkblue: Later; large berries.

Sunshine Blue: Compact choice for pots.