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. Jul 08, There are two approaches you can take. The less drastic approach to getting an overgrown lilac back into shape is to use the third rule.
Prune a third of the oldest branches all the way to the ground each year for three consecutive years. 1. While I'd not hesitate to do rejuvenation pruning on a typical common lilac now, one that is grown in a tree form (single trunk rather than multiple stems/canes from the ground) should be treated a bit differently. Too severe a pruning at this time of year might well jeopardize its future, specially in a colder climate.
Jun 19, Knowing when to trim older lilac bushes is important. Most lilacs don’t require pruning until they reach about 6 to 8 feet tall. 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 stumpchop.buzzted Reading Time: 3 mins.