Once your holiday amaryllis blooms, keep your plant in a room that’s on the cool side to help the flowers last longer, and give them bright light and evenly moist soil. When the flowers fade, cut back the stalks to just above the bulb, and let the leaves continue to grow. Water and fertilize throughout the next summer and,if you moved your amaryllis outdoors, bring it back in before frost. If your amaryllis dies back completely, it’s probably gone dormant; stop watering until new growth appears.
Available in orange, pink, bicolors, salmon, purple or yellow, calla lilies are easy to grow houseplants. White callas are lovely in Christmas-red containers, and stay in bloom a long time. They're tropicals, so wait until all frost has passed if you want to transplant them into your garden. They'll thrive in a sunny spot in slightly moist, organic-rich soil, but will require repotting and bringing indoors before the first fall frost. If you prefer, you can let the bulbs go dormant and store them in a cool, dry, dark place until you're ready to replant next spring.