Blackberry, usually prickly fruit-bearing bush of the genus Rubus of the rose family (Rosaceae) known for its dark edible fruits. Native chiefly to north temperate regions, wild blackberries are particularly abundant in eastern North America and on the P
Blackberries were planted at a spacing of 3.0 m in the row and 1.5 m within the row and trained to a three-wire trellis. Black currants were planted at the same row spacing in the bush training system. Fertilization, weed control, and irrigation standards for the region were provided ...