Lilac plants are almost always deciduous. This means that they will lose their leaves once the winter has set in. This will often result in a mass of twigs and sticks that is not very pleasing to the eye. Lilac plants are generally only requested for their masses of beautifully fragrant blooms, so many gardeners will be able to tolerate a lilac plant with no winter foliage.
There are lilac plants that grow in nearly every climate on the planet, from zones as cold as two, to zones as warm as ten. The look of a row of lilac plants can either be formally pruned, or more naturally grown. Lilac plants grown in a row are usually more commonly informal, but formal lilacs have their own qualities. Formal lilac plants are often pruned into a more circular shape than hedges, which are often very rectangular.
There are a variety of uses for lilac plants. The fragrant blooms add color and romance to a spring garden. The blooms of lilac plants are often cut and brought indoors for a lovely kitchen centerpiece. Lilac plants that grow to fifteen or more feet can be used for a beautiful privacy screen. Lilacs can also make excellent border or foundation plantings. A single lilac plant placed in a prominent location of a garden makes a wonderful specimen plant.