This is an old garden favorite prized for its light purple flowers that appear in May. It is a large, coarse shrub when out of flower so consider using it in the back of a border, or as a hedge or screen. Grow in full sun, well-drained soil with compost added, and apply water once to twice-a-week. Prune after flowering in spring. Lilac grows 10 ft. tall by 10 ft. wide. This plant is not bothered by rabbits, squirrels nor deer.