Lilacs are fairly hardy and easily maintainable shrubs that can offer a lot of privacy and they smell simply wonderful in the late spring/early summer months.

Here are some problems you may encounter…
Aphids and borers- plain insecticidal soap will kill these off
Insects

Little critters…mice like to borrow in the mulch so int he winter do not put too much on there.

Podery mildew during the humid and hot months. Mix 1/2 cup milk with a gallon of water and spray your plants.