My wisteria is 3-4 years old. I prune late fall and during the summer. It gets full sun for about 8-10 hrs per day. It has not bloomed at all - just lots of greenery. Yes, it is on an arbor (a couple of them). HELP!
Certified GKH Gardening Expert
There are several reasons for a wisteria not blooming, but the most common is too much nitrogen. This article can give you some other ideas too: https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm