QuestionsHow to growTrees and ShrubsTypes and Useswisteria 0 Vote Up Vote Down catherine hinchy asked 14 years ago I planted 4 wisteria last spring do i prune them back hard this month to form a framework 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago With wisteria, simply tie into place the shoots you want and that are well positioned and remove the others.