Our wisteria branches are covered in brown 'crispy blisters' that are now weeping a very sticky substance. Any ideas as to what this could be? It does not seem to be one of the 'common' diseases that wisteria can be prone to. Any help would be gratefully appreciated.
Certified GKH Gardening Expert
It sounds like it may have canker. This article will have more information: http://www.ipm.ucdavis.edu/PMG/GARDEN/PLANTS/DISEASES/cankerdiseases.html