Store amaryllis bulbs in a pot or, if the bulbs are bare, in a cool, dry, dark place. Amaryllis bulbs require at least six weeks of cooling at 40 to 50 degrees Fahrenheit before beginning another growth cycle.
Amaryllis plants are of tropical origin, so their bulbs don't tolerate freezing and are not winter-hardy in northern climates. They can be prepared for storage after their leaves begin to brown and die. Begin by cutting the dying leaves to a length of 1 to 2 inches using sharp scissors or garden shears. For bare bulb storage, gently remove the bulb from the soil and brush off any soil that clings to it. Store the bulb in a paper bag or in a box or perforated plastic bag filled with perlite, peat or sawdust. Do not store the bulb near apples, which can sterilize it.
When the bulb is ready to enter another growth cycle, it begins sprouting a new leaf. This is the time to re-pot a bare bulb in a pot that is about twice as wide as the bulb, using fresh potting soil or a light potting mix. Water thoroughly and place the pot in a bright, warm location. Allow the surface of the soil to dry out between waterings.