Common types, which produce seedless fruits, are grown in the Southeast. Smyrna types, which produce seeded fruits, are grown in California. These insects transfer pollen from male plants to Smyrna-type varieties. San Pedro types produce both types of fruit described above. Both are native to America.
Muscadines produce small clusters.
Blackberries are easily classified into those having rigid, erect canes and those having trailing canes, which require trellises to keep plants aboveground. Home gardeners may grow either type, but commercial growers prefer varieties with erect canes for ease of management and highest net income. Until recently, the few thornless varieties that have been available were all trailing types, and growers have generally preferred the erect, thorny types for maximum income per acre. Initial studies indicate that Arapaho may prove best because of certain disease problems affecting Navaho. Fruit color Raspberries can be divided into groups that produce either black, purple, or red fruit.