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Since lilacs can grow from 4 to 30 feet, their height depends on your choice.

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. If you trim a lilac bush too late in the year, then you’ll cut off unwanted branches and next year’s blossoms.

Then cut back the remaining shoots to just above a bud, to encourage branching.

The ideal time to prune is just after the bush finishes blooming for the year. Jun 19, This will keep a younger bush looking nice, but older ones need more intense pruning.

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 Estimated Reading Time: 3 mins. Jul 08, Start by taking out the thickest stems first.

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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. May 20, The time to prune mature lilac plants is just after the flowers have faded. They set the next season's flower buds almost immediately, so late pruning will mean sacrificing next year's flowers. Pruning early also gives the new shoots more energy to develop.

HOW TO PRUNE A LILLAC BUSH IN SPRING! Ever wondering what time of year to trim your Lillac bush? OR do you think your Lillac bush looks overgrown? Then this.