Q.Wisteria diseases
My wisteria is over 20 years old and has done beautifully for all that time. Our deck, which is near the wisteria, was replaced last summer. The original deck had a wood foundation and wood surface. The new deck has the same wood foundation but a trex-type surface. We are seeing some little leaves that look dry as opposed to normal sized leaves. I found the info on gall but do not see any signs of that. I appreciate your feedback.
Here is a link that list common Wisteria problems.
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-diseases.htm