How Do You Get a White Japanese Wisteria to Bloom

Question

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?

Answer 1

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