Timing of Wisteria Pruning - Knowledgebase Question

nazareth, PA
Avatar for ps826
Question by ps826
May 2, 1998
Why did my established wisteria put out very few flowers last year, when previous years it was full of blossoms? Any thoughts?

Answer from NGA
May 2, 1998
Wisteria set blooms in late summer for the next year's spring display. If you pruned during that time you may have inadvertantly removed many of the developing flower buds. Also, excessive vigor from over-fertilizing and watering may have caused growth of foliage at the expense of blooms. Wisteria need a lot of sun to set flower buds, so if increased growth of surrounding vegetation has shaded the plant, it's time to prune companion plants!

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