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Mine are the old fashioned kind and the leaves are almost heart-shaped.

Apr 02, 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 bushdig.barg: denver. Jul 08, 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 bushdig.barg: denver. Jun 26, Timing is the Decisive Factor in Pruning Lilacs If you want to have your blooms next year, it is crucial to prune in those first few weeks after blooming ends. Ideally, this is when you would do maintenance pruning each year. But I get so lazy busy, I end up with a ten foot bush Estimated Reading Time: 4 mins.

You can control the mildew with a non-toxic spray of horticultural oil and baking soda, one tablespoon each in a gallon of water, or there is a new product related to baking soda called Green Cure.

Apr 28, Whether your lilac is a shrub or a small tree, it will need to be regularly pruned in order to maintain a healthy shape and size. To prune lilacs, get to work in the spring: cut fresh flowers for bouquets, nip off the longest stems, and thin out any weak stems at the base%(4).

First scratch in some composted manure into the top 2″ of the soil, and then mulch 3″ deep. Then cut out the oldest canes, or if it has too much dead, cut the whole shrub to the ground in the early spring before it leafs out. This will either renew it or if the roots are rotten, it may not survive the operation.