However, you may need to fertilize again using when the first blossoms.

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.

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 shrubhauling.barted Reading Time: 6 mins.

May 26, It is best to remove between 1/4 and 1/3 of the lilac tree’s biggest stems, before it has had a chance to bloom in the spring. You want to keep about a dozen bigger stems untouched. In the spring after it has bloomed, when you cut it back again, trim your lilac tree to one foot shorter than the height you want it to reach during springtime.5/5(1).

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 little kim lilac bush 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.

Mar 12, Best offers for your Garden - shrubhauling.bar Best Time to Prune a Lilac Tree. When you prune your lilac depends on why you're pru. Prune bushes over three years old during the late spring, after the blooms are gone for the season.

4. Different Lilac Tree VarietiesEstimated Reading Time: 8 mins. Mar 17, Prune right after blooming to have blooms the following year. Tradition shrub trimming says to take out 1/3 of the old branches for three years in a row. However, with lilacs this old, which are a variety that are tougher than nails and need total rejuvenation, cut. Jul 19, 3. Control the height of your lilac tree by trimming it to roughly one foot below the desired height in spring, right after the tree finishes flowering for the year.

Trim away extra growth with. Sep 27, The following year, again in late winter, remove half of the old stems. The best time to prune a lilac tree is immediately after flowering.

Perform a rejuvenation pruning on mature Japanese lilac trees every few years by cutting one-third of the large, old stems all the way back to the ground in late winter.