Q.Six Foot Lilac Bush
What month is the best time to cut it back to about four feet? Can it be cut back in spring before it gets leaves, or must I wait?
Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on March 14, 2011
Wait till after it has finished blooming to prune. If you prune before then, you will lose some of the flowers. Other than flower loss, it will not hurt to prune earlier, but most people like to wait until after they have enjoyed the flower. This article will help:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm
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