Exotic and elegant, the calla lily plant is one of the most unique perennials in the spring garden. Treated as annuals outside of zones 7-9, planting calla lilies in pots to be moved indoors in fall is an effective way of enjoying their gorgeous blooms year after year. The calla lily bulbs can be lifted and stored until the next planting season, too, giving new life to the area. Calla lily care indoors is easy, too. Simply place it in a sunny spot and water when needed. Choose plump, healthy specimens when looking at calla lily bulbs for sale in the spring.