Vaccinium Corymbosum – highbush blueberry

pensasmustikka var alvar Highbush blueberry

Distinguishing Features – Leaves: 3.8 – 7.5 cm long; elliptic, entire, smooth above but somewhat hairy beneath. Flowers: 6 – 13 mm long; corolla 5-toothed; flowering May and June. Fruit: blue berry with a whitish bloom; ripening July and August.

A many-stemmed shrub growing to a height of 1.5 – 4.5 m

It is hardy to zone 2. It is in flower from May to June, and the seeds ripen in August. The flowers are hermaphrodite (has both male and female organs) and are pollinated by Bees. The plant not is self-fertile.

The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil. The plant prefers acid soils and can grow in very acid soil. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Seed – sow late winter in a greenhouse in a lime-free potting mix and only just cover the seed. Stored seed might require a period of up to 3 months cold stratification. Another report says that it is best to sow the seed in a greenhouse as soon as it is ripe. Once they are about 5cm tall, prick the seedlings out into individual pots and grow them on in a lightly shaded position in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of greenwood, May/June in a shady position in a compost that contains some peat. Cuttings of half-ripe wood, 5 – 8cm with a heel, August in a frame. Slow and difficult. Cuttings of mature wood, harvested in November and stored in a fridge then planted in a frame in March. Layering in late summer or early autumn. Another report says that spring is the best time to layer. Takes 18 months. Division of suckers in spring or early autumn.

About the Author


Maria is currently growing everything from seed that she can lay her hands on. Also playing with colours and textures to fulfill her garden desires...