Vitis labrusca, the fox grape, is a species of grapevines belonging to the Vitis genus in the flowering plant family Vitaceae. The vines are native to eastern North America and are the source of many grape cultivars.‘Concord’ is a cultivar developed by Ephraim Bull of Concord Massachusetts from wild Vitis labrusca vines. It was introduced into commerce in 1843. It is considered by many to be the standard of excellence for blue-black American grapes.
These plants are known for being fairly hardy when it comes to experiencing drought or cold temperatures.
To cane prune, select two to four new fruiting canes per vine. Cut back each of these to leave about 15 buds per cane. To spur prune, prune along main canes to leave two to three bud spurs, each 4 to 6 inches apart. Leave no more than 20 to 80 buds per plant depending on the type of grape. Prune in late winter when the vines are dormant. Do not prune during periods of severe frost or after the sap starts to rise.
