Hi, Wayne, Your local cooperative extension may be able to provide specific guidance, and this document gives good basics: https://www.ag.ndsu.edu/carringtonrec/documents/northernhardyfruitevaluationprojectrd/docs2015/spring-pruning-of-grapes Reply
Hi, Wayne, Your local cooperative extension may be able to provide specific guidance, and this document gives good basics: https://www.ag.ndsu.edu/carringtonrec/documents/northernhardyfruitevaluationprojectrd/docs2015/spring-pruning-of-grapes