Apr 02, 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. If you are pruning lilac trees or shrubs entirely to within inches of the ground, it is best to do so in early spring. 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. 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).
Jun 17, Your lilac should be fine though it's odd that a couple of branches just died like that. You did the right thing and that is how you prune an overgrown lilac.
Just be sure to clean your pruning saw or lopper blades with a solution of one part bleach to nine parts water before using it again just in case. Rinse well and wipe dry. Unlike the common lilac, these plants will seldom get out of control. If you do just a small amount of pruning every few years, they may never need to be completely rejuvenated.
Deadheading, also part of annual maintenance, should be done as soon as possible after the flowers fade.
Jan 09, For older lilacs that have not enjoyed good annual maintenance a more severe renovation prune is in order. A good time to do this is in late winter before new growth begins.
You can prune the entire plant back 6 to 8 inches from the ground.