How Do You Get a White Japanese Wisteria to Bloom
This plant is on a south facing pergola and the blooms used to be prolific and gorgeous. The last few years they are pitiful and few. What can I do?
Certified GKH Gardening Expert
The soil may have too much nitrogen. Try to offset it with some phosphorus, like bone meal, to help promote more lush blooms. This article should also help: https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm