The term perennial is reserved for
plants that live for more than two years. Perennials are plants that
die back to the ground each fall. The roots, however, survive the winter
and the plants re-sprout in the spring. Perennial plants remain in
the ground year after year. Once established, many perennials need minimal
upkeep in the form of watering and fertilizing, since their roots are more
far-ranging than annual plantsí roots. Many perennials spread readily,
filling out garden spaces and providing more and more color each year.