Plan to prune the French lilac in the spring when it finishes flowering. The buds for the next year form during the summer. Late pruning removes those buds, reducing the amount of blooms the. 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. Jul 08, When to Prune Lilac Bushes. Many of the newer lilac varieties grow quickly and might need pruning starting in their second or third year. 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. Feb 20, The only right time to prune these shrubs is just after the last of the flowers fade away in late spring.
Prune lilacs in late spring to remove the dead flowers and broken or damaged limbs before the plant sets out its buds as it prepares for next year's treecut.buzzted Reading Time: 9 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.
Lilacs should be pruned yearly to develop a good framework of stems and promote vigorous growth that enhances flowering. Yearly pruning consists of cutting diseased, misshapen, and unproductive stems to the ground. I also thin and remove some stems to encourage properly spaced, vigorous growth. Aug 27, Pruning off damaged branches could prevent further damage. Monitor next spring as lilac starts blooming for the adults and set traps using pheromones (see Lilac borer).
Sprays can be applied. Contact a certified arborist for treatment. If you believe the damage is likely caused by a pathogen, submit a sample to the UMN Plant Disease Clinic. Jun 10, To prune lilacs, get to work in the spring: cut fresh flowers for bouquets, nip off the longest stems, and thin out any weak stems at the base.
Avoid pruning late in the summer or fall since doing so can limit future treecut.buzz: K. There's nothing like the scent of lilacs! Make sure and do any pruning as the blooms fade or just after, or else you cut the next year's blooms off.
To rejuvenate old bushes, cut back a third of the oldest wood to the ground each year. Don't cut all of the short growth back unless you want all of your blooms up high.