I moved into my house a few months ago. I have concord grapes on one side. Howeve, they are very old and overgrown. What can i do to bring them back to what they usaed to be?
Prune "the heck" out of them this winter. See: http://mtvernon.wsu.edu/frt_hort/grape_pruning_basics.htm Pruning Grapes in Home Gardens Ralph