This is the second year since my wisteria has been planted. It bloomed beautifully throughout the summer. This year, I got a couple of blossoms early in the season and then nothing. Other than pruning occassionally, is there something I should be doing to promote blossoms?
Why Didn’t My Wisteria Bloom This Year
Certified GKH Gardening Expert
I would guess that the nitrogen to phosphorus ratio is off. The soil may have an abundance of nitrogen, which would result in nice, healthy green growth but little to no blooms. Without the right amount of phosphorus, it will not bloom well. Bone meal is a great way to add phosphorus. This article will also help: https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm