Apr 02, Knowing when to trim lilac bushes is important. Most lilacs don’t require pruning until they reach about 6 to 8 feet ( m.) tall. The best time for pruning lilac bushes is right after their flowering has ceased.
This allows new shoots plenty of time to develop the next season of blooms. Pruning lilacs too late can kill young developing buds. Nov 17, For lilacs, the recommended method is generally to remove one third of the old wood each year immediately after flowering and shape the shrub over a number of seasons.
Of course, you can prune in the fall if absolutely bushcutter.buzzted Reading Time: 2 mins. Jul 08, Most flowering shrubs need regular pruning to keep them vibrant, and the common lilac (Syringa vulgaris) is no exception. Lilac bushes will typically flower without any effort from you. However, if left to grow and spread on their own, common lilacs will eventually only flower on the tops of the uppermost branches.
The Best Time to Trim a Lilac Bush. Lilac bushes are capable of producing huge quantities of blooms in colors ranging from pure white to deep purple. Many varieties' flowers have a strong.