Agapanthus, or Lily of the Nile, is a perennial flower that has gorgeous blue or white florets arranged in large globes that make this a wonderful addition to the garden. It is very popular California flower and in other places where it is fully hardy. Newer types have been bred for additional hardiness. The roots are large and fleshy, and the leaves are straplike, arising directly from the roots. Flower heads appear, one to a stalk, in clumps of two-foot stalks.