Why are the little buds falling off the wisteria flowers

Question

Only some of the buds stay so the blossoms are very short and some are missing the middle. I have been waiting for 8 years to get flowers on these wisteria. I have 3 and they were not all bought in the same place.

Answer 1

Malformed flowers come from the same reasons as no flowers on a wisteria. I suspect that the plant is getting too much nitrogen. If you follow the directions in this article for getting your wisteria to flower, it should also correct those malformed flowers:
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm