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The lilacs have been beautiful this year and the flower show continues with some of the later blooming types such as 'Miss Kim' Korean lilac. Now is the time to do a little lilac care.
One question I often get is when and how to prune lilacs. When is easy. You have about a 6 week window to prune your lilacs after flowering before they set flower buds for next spring. So, by early July you should be finished pruning. If you're just wanting to maintain a nice shape and size, prune back the old flowers to side branches. Do this annually and you'll keep your lilac full and a manageable size.