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 spring. 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 spring. 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 up with a ten foot bush Estimated Reading Time: 4 mins.
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. Oct 26, And when I searched for information about lilacs, a few sources mentioned cutting the lilac back in spring, others suggested the fall.
Some said ‘cut back hard’ while others said ‘don’t cut too much’. There was even the ‘you have to prune regularly’ and ‘you should not prune very often’ debate. Nov 27, When it comes to lilacs, beauty really is in the eye of the beholder. If a lilac bush has become extremely overgrown, plan on cutting back the plant over a period of three years. Each year after the flowers have bloomed and died, prune one-third of.