Selecting, Planting, Pruning and Propagating Lilacs

Lilac selections

For true lilac lovers, the thought of only one flush of blooms in a growing season is a sad thing. To extend the bloom season in your garden, combine early-flowering selections with mid- and late-season bloomers.

Planting lilacs

Here's the first rule of planting: lilacs need lots of space to grow. If you're planting a hedge, they'll need a spot at least seven to eight feet wide and ten feet wide for a shrub.

They also need at least six hours of sun a day to have excellent flowering. Provide a well-drained, alkaline soil. When planting, add a handful of lime with subsequent twice-a-year applications to keep the shrubs in peak condition.

To plant, dig a hole about as deep as the pot is or even a little deeper so you can add some compost to the hole. Take the lilac out of the pot and score the roots to get them ready to spread out in their new home. Put it in place and backfill the hole. For one more shot of nutrients, add a bit more compost on the soil surface. Water thoroughly. Once the shrub is established, let nature take over the watering duties; most lilacs are drought-resistant.

Pruning

Occasionally, you may need to prune more than just spent blossoms. When your shrubs get too tall to enjoy the blossoms, it's time to prune and rejuvenate the lilac. You could call this the "June prune." After enjoying the flowers in the spring, cut back one or two of the older, more raggedy limbs to the ground with a handsaw. This encourages healthier growth and more vigorous blooming of the plants.

Propagation

If you want more lilacs, propagate. To do this, take a shovel and cut a shoot from the mother plant in the spring. Then wait until the fall before lifting it out. This way it has a chance to get a few roots growing, and the plant will be more successful. It's those shoots that ensure the lilacs endure from season to season.