Ontario Grapes
Ontario (Winchell x Diamond) From Cornell University's Geneva, New York experiment station. A decent white American grape, with fairly large clusters of mild, fruity white, seeded grapes. Overall disease resistance is good and the vine is upright and productive. About as hardy as Concord, to -20 F in most conditions. Ripens a month earlier than Concord. With it's good overall balance of traits, Ontario's greatest virtue has been in breeding. It is a parent of a many good grapes from several breeding programs. Prune to two bud spurs on cordons.