Grapes Pruning grapes properly, so as to get maximum yield, is often a confusing issue.
For the expert, there is a method involving trimming, weighing the trimmings and counting the fruiting buds left on the bud canes. It will grow a number of shoots. Then cut off the tip to force branching. The summer growth will have resulted in many side shoots. Trim these back to 6-10 buds each.