Q.why don’t our wisteria vines bloom?
We have grown 2 different vines and they are in full sun and we keep them pruned. They have not bloomed. One of them not at all and it has been planted for 5 years and the other has not bloomed for 2 years.
Was your wisteria bought at the nursery or grown from seed? Wisteria grown from seed can take up to 15 years to bloom, as incredulous as that sounds.
The following article details the reasons for non-blooming wisteria and offers suggestions to remedy it:
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm
Does the wisteria develop buds that just aren’t opening? If so, this article will help you:
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm