Q.Wisteria
I planted my wisteria 5 years ago. The 1st 3 years it blossomed beautifully. Last year and this year it produced copious buds, but they have failed to flower.

Downtoearthdigs
Answered on May 9, 2016
Here is some articles that will help you - one discusses the possible reasons wisteria buds do not open and the other why wisterias do not bloom:
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-buds-dont-open.htm
https://www.gardeningknowhow.com/ornamental/vines/wisteria/wisteria-blooming-problems.htm
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