I have a wisteria that was blown over by hurricane Irene. Of course, it was intertwined in a trellis and I can't get it straightened up. What I need to know is how far down can I cut the bush and still have it grow back?
Cutting Back Wisteria
Certified GKH Gardening Expert
Once wisteria is established, you can cut it back significantly without harming it. Remove dead wood as well as any crowded branches and cut back the side branchesto about a foot or so from the main trunk. You may also want to go ahead and remove any suckers that may be located around the base. This article should also help: https://www.gardeningknowhow.com/ornamental/vines/wisteria/pruning-wisteria.htm