Many of the newer lilac varieties grow quickly and might need pruning starting in.
Apr 02, When to Trim Lilac Bushes. Knowing when to trim lilac bushes is important.
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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. Jul 08, 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. While I'd not hesitate to do rejuvenation pruning on a typical common lilac now, one that is grown in a tree form (single trunk rather than multiple stems/canes from the ground) should be treated a bit differently.
Too severe a pruning at this time of year might well jeopardize its future, specially in. Jul 14, If you put off pruning until later in the season, you risk removing the developing buds. This is equally true for lilacs such as Bloomerang Purple that bloom twice a year.
By pruning the bush after its initial bloom, you encourage new growth and more flowers in its second bloom in early treegrinding.barted Reading Time: 2 mins. Nov 18, The best time -- and only correct time, really -- to prune lilacs is just after blooming.
All shrubs fall into one of two categories; some, like many of the hydrangeas, bloom exclusively on new wood and can be pruned to the ground each fall if required. Others, such as lilacs, bloom only on old wood from the previous season. Thus, if you prune at any time other than immediately after flowering, you will cut off next year's blooms.
For lilacs, Estimated Reading Time: 2 mins.