When pruning a lilac after it flowers, do I need to.

Apr 02, When to Trim Lilac Bushes. 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.

You can start pruning them when they are years old, and have established themselves well.

Jul 08, The general shrub pruning rule is to cut no more than a third of the stems each year. 2  That will help the plant remain constantly vital, with new stems developing as old stems bloom. Your goal is to have a lilac bush that has somewhere between eight to 12 stems of various ages, all of them between 1 to 2 inches in diameter.

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 lazy 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 bushleaning.barted Reading Time: 4 mins. Apr 12, If the bush is severely overgrown, prune it back by one third. Remove dead/dying branchs and cut back problem shoots at root level. You won%26#;t get flowers next year but, you will have a much stronger bushleaning.bar: Abbot.