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Fall Blooming.

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. For lilacs, the recommended method is generally to remove one third of the old wood each year immediately after flowering and shape the shrub over a number of seasons.

Of course, you can prune in the fall if absolutely required. Can you cut a lilac bush to the ground? Most lilacs don't require pruning until they reach about six to eight feet (2.

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. You can cut your lilac back after the blooms have dried. There are two ways to do this: one is to cut 1/3 of each lilac stem to reduce and strengthen the bush. The bush will bloom next Spring.

The other way is to cut the lilac to about 2 feet above ground level. It will take the bush 2 years to come back renewed with beautiful blooms. As soon as the lilac bush's flowers are dead, trim each flower stem back to the leaves, removing all trace of the flowers. This step stops the lilac from using its energy to make seeds. Jun 08, Hometalk.

The world's largest online community of home and garden DIYers, where you can find tons of how-to's, ideas and advice to create the home you love. Dec 10, Cut one or two of the lilac's oldest stems back to the base of the plant if the shrub is several years old and becoming bare or scraggly looking at the base.