Overhead Trellis or High Cordon Training?

Grape-bearing canes of native American grapes including Concord and other bunch grape varieties of Vitis labrusca and muscat grapes (V. rotundifolia) trail downward. This trailing habit makes them suitable for a cordon growing on a trellis wire strung from 4 to 6 feet above the ground. This is a high-cordon trellis. Grape-bearing canes from European wine grapes (V. vinefera) tend to grow upward. Their cordons are best grown on wires strung 2 to 3 feet above the ground and their grape-bearings canes trained to grow up to a top wire. These are low-cordon trellises.