While there are several ways you can trim a grapevine, all share the same basic steps for managing varieties that require winter protection. These grape varieties should be pruned into one horizontal trunk that can be easily removed from the trellis or support structure. Prune old, neglected vines in stages. These should be pruned each year, removing all growth with exception to new fruiting canes and renewal spurs. Renewal spurs will supply the new fruit canes for the next year’s growing...
