Rubus ursinus var. loganobaccus
Family: Rosaceae

It is thought that the boysenberry is an offshoot of the loganberry group, which grows naturally in California, though the exact parentage is not known. It produces large, dark wine-red, almost black, berries around 4 cm (1½ in) long and 3 cm (1 in) thick. These tart, soft, juicy berries are used for making jams and drinks.

Cultivation

Boysenberries do well in a reasonably fertile, well-dug soil, enriched with a good supply of well-rotted manure. As they are trailing plants, space them about 1.8 m (6 ft) apart and support them with a trellis or wire netting. Weed control is essential and plenty of water should be given during the growing season. Prune the plant each year to encourage the growth of the new, vigorous canes which will bear the next year's fruit.

Climate

This fruit grows in zone 6.