Consistent with its tree-like shape, these plants should be pruned in.

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.

Jul 08, 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. Jun 03, Another way to start getting rid of lilac bushes is to use chemicals. Your first step in removing old lilac bushes this way is to cut the bushes to ground level with a chainsaw.

Burn or dispose of all of the foliage. The second step in getting rid of lilac bushes with chemicals is to apply herbicide containing Glyphosate.

When you put this chemical on open cuts on the lilac stumps, it will kill the. One way to renew a large, overgrown lilac is to cut the entire plant back to within 6 to 8 inches of the ground in late winter (March or early April).

Tipping off your lilacs in this way will encourage them to sprout new, healthy growth near those cuts.

This severe pruning will induce a large number of shoots to develop during the growing season. Jun 26, 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 thermite stump grinder busy, I end Estimated Reading Time: 4 mins. Lilac bushes are some of the plants which need this for proper, orderly growth. You can start pruning them when they are years old, and have established themselves well.

In their case, it is important not only to prune, but also to do so at the right time of the year. Here are certain tips that may guide you on how to prune lilac stumppruning.barted Reading Time: 4 mins.