Boysenberries are a hybrid berry made from crossing blackberry, raspberry, loganberry, and dewberry. They have an excellent reputation for flavour, with large fruit tasting like a sweet blackberry, combined with the hardiness, disease resistance, and vigour of the other berries.

Boysenberries were developed to combine the vigorous growth or blackberries with the juiciness and sweetness of other berries. Plants can grow up to 2 m high and wide, and produce fruit larger in size that both blackberries and raspberries. The canes are usually thornless.