Cut one or two of the lilac's oldest stems back to.

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.

If you are pruning to renovate a common lilac tree or bush, then do so during the winter. This is also the best time to remove dead wood. What to look for when you prune common lilac. The blooms of a lilac tree may well be affected by pests or disease so if you feel your plant is not flowering as abundantly as it should, look out for the following:Estimated Reading Time: 6 mins. Sep 27, The Best Time to Prune a Lilac Tree. The best time to prune a lilac tree is immediately after flowering. Prune back to a branching limb or inches above the ground.

Sep 27, The best time to prune a lilac tree is immediately after flowering. Prune back to a branching limb or inches above the ground.

Prune A Japanese Lilac Tree. The Japanese lilac tree--scientifically known as Syringa reticulata--is a large ornamental multi-stemmed shrub that features a vase-shaped crown, spreading branches, oval, dark green. The Best Time to Trim a Lilac Bush.

Make cuts just enough above the side shoots so the shoots are not damaged but not so much above them so that a long stub of the branch is left behind.

Lilac bushes are capable of producing huge quantities of blooms in colors ranging from pure white to deep purple. Many varieties' flowers have a strong. Jun 03, Many bushes that flower in spring, including the lilac, are best trimmed in the weeks immediately after the blooms die off.

For lilacs that bloomed in May, for example, early June is an ideal time to trim. The new wood created after spring is where some of next year's flower buds form. If all the trimming happens in spring, the bush still has.

Never knew you had to prune lilacs -- good to know.

Apr 06, Please note: This article was originally published on 4/6/ and was republished on 6/9/ Common lilacs (Syringa vulgaris) are a favorite landscape shrub here in Ohio and beyond, with flowers that provide beauty and an unmistakable fragrance every shrubmulching.bar cultivars of lilacs offer different habits and uses in the landscape, but provide the same display of flowers that we all love.

The proper time to prune deciduous shrubs is determined by the plant's growth habit, bloom time, and health or condition. Spring-flowering shrubs, such as lilac and forsythia, bloom in spring on the growth of the previous season.

The plant's health or condition determines the best time to prune. green tear drop shaped tree seed