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Keeping this in consideration, when should dwarf lilacs be pruned?
When to Trim Lilac Bushes Most lilacs don't require pruning until they reach about six to eight feet (2-2.5 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.
In this way, can I prune lilacs in the fall?
One way to renew a large, overgrown lilac is to cut the entire plant back to within 6 to 8 inches of the ground in late winter (March or early April). This severe pruning will induce a large number of shoots to develop during the growing season.
How to Prune Miss Kim Lilac Bushes
- Wait until early to midsummer, then examine the Miss Kim lilac bush for branches that have few or no leaves. Cut these branches off near the base of the bush with hand pruners or loppers.
- Look at the bush to locate the longest, tallest branches.
- Remove lilac blooms from the bush when they start turning brown.