In late winter of the following year, select and retain several.

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.

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Jun 26, Cut it down! Seriously, drastically cut it back to the ground and get almost all new shoots! Then those new shoots will have blooms and we are back to blooms at the level we can see them and pick shrubhauling.barted Reading Time: 4 mins. Nov 27, Generally, lilacs do not need to be cut back until the plant reaches eight to ten feet tall.

However, the best time to prune the entire bush down to the ground is at the beginning of spring. Lilacs should be cut back annually.

How to Prune Lilacs. Jul 08, If you can't stand the look of your old lilac or you just want a quicker approach, you can take the drastic measure of cutting back the entire plant to about 6 to 8 inches above the ground in the early spring. Fertilize the plant with compost or a balanced fertilizer to prompt new growth.

There is always another hypertufa pot I want to make or some weeding to do, know what I mean?

Apr 27, If the lilac is not grafted you can cut the entire plant off at the ground but don’t expect any blooms for a couple years. Pruning to the ground is the most drastic method but it does work. Less intense renovation prune You can also do a renovation prune over a 3 year shrubhauling.bars: Aug 27, Implement renewal pruning and proper plant care (watering, mulching, fertilizing) to help the plant recover.

Keep an eye on the plant in the season for signs of permanent damage and the possibility the plant may need to be replaced.

Possible replacements for lilac can be found in the Plant Elements of Design plant database.