Amaryllis is a bulbous plant that is often grown indoors in containers. If you are growing your amaryllis outdoors, consider growing it in a pot (with drainage holes) so you can move it around to the best location during the different stages of growth and during the winter months if you live in a cool climate. In order for your amaryllis to multiply itself or self propagate by growing additional bulbs, you will have to take excellent care of it. This way, it will have the energy to not only thrive and bloom, but will have extra energy to grow extra bulbs.
Maintain soil that is evenly moist; however, do not allow it to sit in standing water. Always dump out excess water in the collection tray. Before planting your amaryllis, place a 2 inch layer of rock and gravel at the bottom of the pot to allow for good water drainage.
Keep the plant in the sunlight and near 75 degrees F. When the flowers open, remove the plant from the sun if you want to prolong the life of your flower.
Cut the wilting flowers off 2 inches below the blooms to prevent the plant from using its energy to make seed. Move the plant to an area with partial sunlight once all flowers are finished blooming.
Fertilize your amaryllis at this time with an all purpose slow release fertilizer. Keep the soil moist and leave the green foliage intact until it turns yellow. At that time, you can cut it back.
Divide the bulbs in the fall. Gently lift the bulbs out of the soil and brush off the excess dirt. Look at the bulb to notice if there are any small bulbs growing on the larger main bulb. If so, pull them off with your hands. Plant the bulbs immediately in their own pots and care for them as mentioned above. They may not bloom the first year or two.