Amaryllis bulbs are one of the larger and more dramatic flowering bulbs available in the marketplace today. Whether grown indoors or outdoors in the garden soil in temperate to warm climates, these flowers perform well for many years under light but consistent care. They typically require little pruning save the removal of spent flowers and damaged or dying top foliage.
Deadhead or cut away each individual flower head that blooms on top of the amaryllis flower stalk as each flower fades. Leave the remainder of buds and fresh blooms on top of the stalk in place.
Prune away any dead, badly damaged or disease stricken leaves surrounding the amaryllis throughout the growing season. Place cuts at the base of the strap-like leaf just a 1/4- to 1/2-inch above the crown of the bulb.
Shear off all top foliage down to the crown of the bulb in the late fall or winter in climates where the top foliage does not remain green. Compost or discard the stalk in the trash.
Mulch over the top of the sheared bulbs with an organic material, such as compost, shredded bark or leaf mold, to protect the bulb from cool temperatures and drought.