You would have to get most of the main roots with the bush.
Apr 02, 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. Lilac bushes bloom only once each year, in spring, but they make new buds after they bloom. The buds become the next year’s flowers.
If you trim a lilac bush too late in the year, then you’ll cut. 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. The best time to rejuvenate large, overgrown shrubs is late winter or early spring (March or early April).
Heavy pruning in late winter or early spring will reduce or eliminate the flower display for 2 or 3 years. However, rejuvenation pruning will restore the health of the shrubs. May 20, New lilac bushes don't require maintenance pruning until they are about 6 - 8' tall. 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.
When is the best time for common lilac pruning? Fading flowers should be removed during the last week of May. This will prevent the plant from expending too much energy into making seeds, and will also relieve the stems and branches from the burden of decaying stumpclear.barted Reading Time: 6 mins. i680 tree fall