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Lilac bushes are capable of producing huge quantities of blooms.

Jul 08, In general, by the time a stem reaches more than 2 inches in diameter, it should be pruned. If you are diligent with annual pruning of your lilac, the shrub will grow to about 8 feet tall with flowers throughout the branches. The time to prune mature lilac plants is just after the flowers have faded in the. 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 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 shrubdelimbing.buzzted Reading Time: 3 mins. Jun 26, A lilac shoot takes around three years before it delivers a blossom. So plan to take out 1/3 of the bush every year, choosing the most seasoned stalks. Chop them down to simply over the degree of the dirt. As you do, permit another shoot to develop, to supplant every old one you evacuate. Oct 06, You should resist the temptation to prune or trim your lilac bush until it is at least 6 ft.

tall, which typically occurs during the second or third year of growth. At this point, there will be enough excess stems and blooms for optimal shaping.

May 19, This diminishes the year's bloom, but a crowded shrub may not be blooming well anyway. Drastic pruning should be done in stages, taking away some of the old stems over several winters. Remove only 1/4 to 1/3 of the largest stems per year. Feed and mulch well in spring.