11 years ago. I have three beautiful Dwarf Korean Lilac Trees (not shrubs) which have trunks about 5 inches in diameter and crowns up to 7 feet in diameter.
A local landscaper said I should trim them back in the Fall using a hedge trimmer to shape it, i.e., pay no attention to branch structure. However, everything I've read says to wait until after they flower in June to cut them back, but they were talking about.
Sep 21, Prune for height and spread in the late spring or early summer immediately following bloom.
Prune following the natural shape of the shrub and only remove what is necessary to prevent when your Meyer Lilac from encroaching on other plants or a structure. 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.
May 26, Lilacs bloom in the spring and you’ll want to prune your lilac tree two times per year: during the winter months and then following its lovely spring bloom. When you prune a tree or plant, you are removing branches and stems which will help your 5/5(1). Dwarf Korean Lilac, known botanically as Syringa meyeri and commonly as Meyer Lilac is a large shrub lilac that blooms profusely in the late spring.
It has a billowing and round natural growth habit that reaches 8 feet in height and 12 feet in spread. It is often planted en masse for informal hedging and screening shrubbery. Pruning- Dwarf Korean Lilac trees should be pruned immediately after the plant is done blooming.
Removing old flower clusters will encourage new flowers to emerge. Pruning at other times of the year will not hurt the plant, but it may reduce the number of flowers for the next season.
Aug 15, The Korean lilac does not grow fast, so it isn’t necessary to trim it every year. But after it has reach full blooming during the spring and summer season, you should remove and withered and old foliage and flowers.