In order to understand the pruning of grapes, the operator must fully grasp this principle: _Fruit is borne on wood of the present season, which arises from wood of the previous season._ To illustrate: A growing shoot, or cane, of 1909 makes buds.
The essential operation of pruning a grape vine, therefore, is each year to cut back a limited number of good canes to a few buds, and to cut off entirely all the remaining canes or wood of the previous season's growth.
Grapes are set from 6 to 8 feet apart in rows which are 8 to 10 feet apart.