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, The time to prune mature lilac plants is just after the flowers have faded in the spring. Lilacs set next season's flower buds almost immediately, so late pruning will mean sacrificing the next year's flowers.
Pruning early also gives new shoots more time and energy to develop, ensuring plenty of blooms for the following spring. This is why your lilac needs yearly pruning! Pruning a lilac isn’t difficult, but it’s vital to follow certain lilac pruning guidelines, or your plant will suffer – and you won’t be able to enjoy the springtime flowers the plant is known for. Different varieties of lilac listed here. In the picture above, pruning the lower half late in the year killed the following year’s flower buds, while pruning the upper half at the proper time Estimated Reading Time: 2 mins.
A lilac bush does best when it is trimmed every year. Doing so helps to maintain the plant's shape and to minimize the number of old, damaged branches, which are vulnerable to disease. Jun 03, Pruning lilacs is best done within a few weeks after the blooms fade. Trim them with bypass pruning shears, cutting blooms off just above the place the stem forks beneath the bloom.
Old growth should also be cut back every few years to help keep.