When Does Wisteria Bloom?

Wisterias normally bloom in early May. Soon after the blooming period is over, tendrils begin to grow out of the main structural vines that you've tied to the cross braces. For the first few years, while the wisteria is being trained, it won't bloom because it is too young.

How do I get my wisteria to flower?

The first is to add phosphorus to the soil. This is done by applying a phosphate fertilizer. Phosphorus encourages wisteria blossoms and helps to balance out the nitrogen. The other way to reduce the amount of nitrogen a wisteria plant is getting is to root-prune the plant.

How many times a year do wisteria bloom?

Frequency of Blooms

Wisteria flowers bloom once per year. The blooms appear in mid- to late spring, in May or June in most places. The plant can take up to two months for all of its blooms to show through in their entirety.