These are grape varieties developed in whole or in part from species indigenous in this country. They are hardier and more disease resistant than the Old World grape, and are grown at least in home gardens in all mainland states except Alaska.
Plants are perennial and long-lived vines, in commerce supported on trellises.
Fruit is produced in bunches. Individual berries, from 0.5 inch to near 1 inch diameter, vary in shape from oval to slightly oblate and in color from green to red or black. Fruits generally contain contain 2 to 4 seeds. Fresh, juice, wine, jelly and jam.