Wisteria

Question

I have 100s of flower buds, 90% of which have gone limp and many appear to be dying. In past years there has always been a good show.

Answer 1

Did you have a late frost in your area? If so, it likely killed the blooms. The leaves are less frost tender than the flowers, so it is not uncommon for a frost to wipe out the blooms and leave the rest of the plant undamaged.