The Amaryllis is native to South Africa. Its flowers are trumpet-shaped and are borne on 2- to 3-foot stalks. Many colors of amaryllis flowers exist--some bright, some subdued and a pure white. Leaves may be up to 18 inches long. These are tropical to subtropical flowers that are grown from bulbs available from Holland, North America and South Africa. Amaryllis grow well in containers, as they are only hardy in USDA planting zones 8 through 10.
Fill the bottom inch of the container with gravel to add weight to the container and ensure good drainage. Then mix together one part compost to three parts potting soil, and place about 2 inches of the soil in the container. The container should be large enough to have at least 2 inches between the bulb and the side of the container.
Place the bulb in the center of the container, on top of the soil, and fill in around the roots and half of the bulb. There should be 1 or 2 inches unfilled with soil to assist in watering, and half of the bulb should be sticking out of the top of the soil.
Water the soil thoroughly, and set the container in an area with bright indirect light and a temperature of about 70 degrees F. You should not need to water the bulb again until it starts to sprout. However, if the soil is getting completely dry, water to moisten it only.
Move the container to receive direct sunlight for at least four hours a day and temperatures about 75 degrees F, once the bulb begins to sprout. Begin watering to keep the soil evenly moist.
Move the container from direct to indirect sunlight once the flowers open. This will help to prolong the life of the flowers. Each flower should last about two weeks.
Cut the flower stalks 1 to 2 inches above the bulb with a sharp knife when the flowers fade. Do not cut or damage the foliage as the leaves gather nutrition for the next flower. Water when the surface soil starts to dry.
Begin fertilizing every two weeks with a water-soluble houseplant fertilizer to encourage growth of new leaves. The bulbs can be left in the same container for two or three years before re-potting will be necessary.