Apr 02, How to Prune Lilac Bushes. When pruning lilacs, cutting back the tops of overgrown stems is oftentimes not enough. It is generally better to cut the entire stem. Trimming lilacs is best accomplished using clippers. Remove spent blooms all the way to the stems to prevent seeding and encourage more blooms later on. Cut back about a third of the branches. Jul 08, Start by taking out the thickest stems first. Although you'll be losing some flowers for the current year, pruning overgrown lilacs is easiest early in the spring before the branches leaf out.
After three consecutive years of pruning your overgrown lilac in this way, new shoots should comprise the bulk of the plant. Prune them out as low as you can get, or as near the main stems as possible.
Some lilacs produce many new shoots from the base (watershoots or suckers). Remove all but a few of these each year, leaving ones to make new branches where you want, and that don’t rub on others. Jan 09, You can prune the entire plant back 6 to 8 inches from the ground. This is a very dramatic method and you won’t most likely not see blooms for 2 years but it works.
Note: Check to see if your lilac has been grafted. Check the main trunk of the Lilac and see if there is a bump and difference in the bark. That would be the graft union. Aug 21, If you simply want to remove the seed capsules from a common or French lilac (Syringa vulgaris), go ahead but cut only the leafless stem at the tip of the branch that carries the capsules, not the secondary branches just below, the ones with green stumphauling.buzz’s from those branches that next year’s flowers will appear, as, by August, they already carry the buds of the.
Jun 10, To prune your lilacs, start deadheading in early-to-late spring by cutting the flowers at their base just after they’ve reached their peak. You should also cut any flowers that are already dying so they don’t sap energy that could be used for new stumphauling.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.