Butterfly Bush Pruning

butterfly on Beddleia


Spring Trimming of The Buddleia Butterfly Bush

Question: Should a buddleia be trimmed in the spring? Mine is about four years old and has never been trimmed. It blooms well, but the flowers are not as large as I expected. Would trimming make them larger? CC, Illinois.

Answer: Pruning butterfly bushes should improve its blooming… so do not wait another 4 years. It is best to think of the butterfly bush as a herbaceous perennial and treat it as such instead of as a shrub.


For best results – with Buddleia Davidii – and secure the best bloom from a buddleia, prune it to within about six inches of the ground each spring just at the time new growth begins to show at the base of the shrub.

Image: Chris Potako

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