Tipping encourages lilacs to sprout new healthy, bushy growth near the cut.

Dec 27, pruning lilac for deadwood removal All diseased or dead wood should be removed at any time. It is okay to light shape a shrub with uneven growth during the fall. Remove stems growing out of the parent shrub by cutting them down close to the main bushfelling.barted Reading Time: 4 mins. Also, can I prune lilacs in the fall? For lilacs, the recommended method is generally to remove one third of the old wood each year immediately after flowering and shape the shrub over a number of seasons.

Of course, you can prune in the fall if absolutely required. Secondly, what plants get cut back in the fall? Plants To Cut Back In Fall. Can lilacs be pruned in the fall? For lilacs, the recommended method is generally to remove one third of the old wood each year immediately after flowering and shape the shrub over a number of seasons.

Of course, you can prune in the fallif absolutely required. Click to see full answer. Jul 08, There are two approaches you can take. The less drastic approach to getting an overgrown lilac back into shape is to use the third rule. Prune a third of the oldest branches all the way to the ground each year for three consecutive years. 1  Start by taking out the thickest stems first.