To get your Wisteria to bloom stop feeding it nutrients with high amounts of nitrogen. Fertilizers with high amounts of nitrogen will contribute to lots of green growth, but very little or no flowers. Root pruning will help, but it is best to prune a wisteria's new growth shoots in early spring. From the old woody main stem there will be green new growth. On this new green tendril, count five to six new leaf nods out from the old woody stem and prune at this point. This will help induce the wisteria to bloom.

Does the same process apply to Kentucky Wisteria? Ours is 2 years old and has bloomed each year, although not prolific. We are in the Lindsay area. When would you prune Kentucky Wisteria?

Yes, the same pruning procedure applies to the Kentucky Wisteria which is done in early spring when the new shoots appear. Don't expect prolific blooms from a two year old plant.