Hippeastrum hybrids, commonly called amaryllis, bear flamboyant wide, trumpet-shape blooms in white, pink, red, and salmon. Arching fans of board, straplike leaves appear during or after flowering. Hardy only in Zones 9-10, amaryllis are great indoors as flowering, container grown plants.
When the flowers fade, cut off the flower stalk close to the bulb. Return the plant to a sunny window and water regularly. You may keep the plant inside all year, feeding every 2-3 weeks with liquid seaweed, fish emulsion, or other organic fertilizer. You can put your amaryllis outside after frost in a pot with morning sun or under the shade of tall trees, or knock them out of their pots and grow them in the open ground. Gradually reduce water in late summer to encourage dormancy. Put the amaryllis in a cool dark place such as a cellar for 6-8 weeks. You should not water. After a few months' rest, replace the top few inches of soil and repot (if need be) and begin again.