Cross-pollination is always needed to produce an adequate fruit crop. Fruit set and crop size are improved by cross-pollination. All varieties, except Stella and Lappins, are self-unfruitful. Most varieties are self-fertile. To assure good crops, consult an extension specialist to determine the proper variety mix to assure fruit set.
Most varieties are self-fertile.
All commercial varieties, except J. H. Hale, are self-fertile. All varieties are self-fertile, but a pollinator will increase the amount of fruit produced. To be on the safe side, provide pollinators. All varieties are self-fertile. Most are self-fertile.