Apr 28, To prune your lilacs, start deadheading in early-to-late spring by cutting the flowers at their base just after they’ve reached their peak.
You should also cut any flowers that are already dying so they don’t sap energy that could be used for new growth%(4). Jul 19, Control the height of your lilac shrub by trimming it to roughly 1 foot below the desired height in spring, right after it finishes flowering for. As soon as the lilac bush's flowers are dead, trim each flower stem back to the leaves, removing all trace of the flowers.
This step stops the lilac from using its energy to make seeds. Timing is the Decisive Factor in Pruning Lilacs.
If you want to have your blooms next year, it is crucial to prune in those first few weeks after blooming ends. Ideally, this is when you would do maintenance pruning each year.
But I get so lazy busy, I. A Note About Pruning Bushes with Fall Clean-Up. A lot of homeowners request pruning services in the fall as part of an overall effort to clean up their landscape before the winter and this can certainly be performed on many shrubs.
Pruning bushes around the home can help them look shapely and nice before visitors come for Thanksgiving or those.