Apr 02, 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.
Jul 08, Start by taking out the thickest stems first. Although you'll be losing some flowers for the current year, pruning overgrown lilacs is easiest early in the spring before the branches leaf out. After three consecutive years of pruning your overgrown lilac in this way, new shoots should comprise the bulk of the plant. 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. Jun 19, The best time for pruning older lilac bushes is right after their flowering has ceased. This allows new shoots time to develop the next season of blooms.
Pruning too late can kill young developing shrubnotch.buzzted Reading Time: 3 mins.