The Q&A Archives: Timing of Wisteria Pruning

Question: Why did my established wisteria put out very few flowers last year, when previous years it was full of blossoms? Any thoughts?

Answer: 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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