Gardeners Supply Company
Lilacs are usually fairly reliable bloomers, but sometimes they fail to
flower. Here are some tips to make sure yours bloom:
Usually insufficient sunlight is the problem. A minimum of six hours of
sun is needed each day.
Too much nitrogen can be a problem. Often lilacs are planted in the lawn
and fertilizers used to green up lawns are too high in nitrogen. For the
lilac, this causes beautiful green foliage but little bloom. Avoid using
fertilizers high in nitrogen.
Make sure you prune at the right time. In early spring, remove any dead or
damaged wood. But don't do any major pruning because you can easily remove
the dormant flower buds. After the flowers fade, it's OK to do more major
pruning, such as reshaping or rejuvenation of an old bush. You can also
remove the faded flowers. Just be sure to complete pruning before
midsummer. If you wait too long, you risk removing some of the next
Click here for a complete guide to lilac care and planting.