The leaves on my wisteria are drying up and falling off. The plant is at least 10 years old. It has always been full and beautiful. What would cause this to happen?
Certified GKH Gardening Expert
This can be caused by either a fungus or root damage. Check the roots for signs of damage or a gall (kind of like a tumor for plants). If you do not see signs of a root problem, treat the plant with a fungicide. This should help.