An amaryllis is one of the easiest ways to get a big, dramatic flower indoors in the dead of winter, and one of the most confusing to keep going afterward. The bulb arrives, a thick stalk shoots up, and a few weeks later the blooms are open. Then the flowers fade and many people assume the plant is finished. It is not. Amaryllis (Hippeastrum) is a bulb that can flower for many years if it gets a simple yearly routine.
This guide follows that routine from planting through flowering, leaf season, and the rest period. If the plant is already struggling, the troubleshooting page on amaryllis not blooming covers the common problems.
Light
Amaryllis want bright light. While the stalk is growing, a bright window works well, and turning the pot regularly keeps the stalk upright instead of leaning. Once the flowers open, slightly cooler conditions and a spot out of direct sun make the blooms last longer. After flowering, the leaves need as much bright light as possible; they are recharging the bulb for next year. A sunny window, or a grow light in a dim room, helps.
Watering
Water sparingly at first. When a dormant bulb is planted or restarted, give it one good drink, then hold off until growth shows, because the bulb is already holding moisture. Once the stalk and leaves are growing, water when the top of the soil feels dry and let the excess drain. Soggy soil is the quickest way to rot a bulb. The guides on overwatering versus underwatering and root rot show what to look for.
Soil and potting
Use a well-draining potting mix and a pot with drainage holes. Choose a pot only slightly wider than the bulb, with roughly an inch of space around it, since amaryllis tend to bloom better when snug. Plant so the top third to half of the bulb, the shoulders, stays above the soil. A heavy pot also helps, because the tall flower stalk can tip a light one over. Repot only every few years, when the bulb has clearly outgrown the container.
Humidity and temperature
Normal household humidity is fine. Average room temperatures suit the plant, and warmth helps a dormant bulb start growing. Cooler air while the flowers are open can prolong the display. Keep the pot away from cold drafts and heating vents.
Fertilizing
Feeding matters most after the flowers are finished. Through the leaf season, use a balanced houseplant fertilizer at the label rate on a regular schedule, since the bulb is rebuilding its stored energy. Stop feeding when the plant heads toward its rest period. Gift-kit bulbs do not need feeding while the first flowers open, because the bulb already contains the energy for that show.
Propagation
Mature bulbs sometimes produce small offset bulbs at the base. When the plant is repotted, these can be separated and grown in their own small pots. Offsets are small and usually take a few years to reach flowering size, so patience is part of the process. Growing from seed is possible but slower still.
The yearly cycle: what makes amaryllis different
The feature that sets amaryllis apart from most houseplants is its built-in rest. A typical year looks like this. The bulb flowers in winter. After the blooms fade, cut the flower stalk down to the top of the bulb, but keep the leaves growing in bright light and feed them through spring and summer. Late in the season, as the leaves begin to yellow naturally, stop watering and let them die back. Trim off the dead foliage and put the pot in a cool, dark place for roughly two to three months. Then bring it back to warmth and light, water once, and wait for the next stalk.
Skipping the rest is the most common reason amaryllis fail to rebloom. Planning backward is useful: for flowers around a particular holiday, start the restart a few weeks beforehand, since the stalk takes time to appear and open.
Common problems
No flowers, a leaning stalk, soft bulbs, and yellow leaves each have different causes, usually tied to the rest period, light, or watering. The page on why an amaryllis is not blooming sorts them out. Yellowing mid-season usually points to overwatering or low light; yellowing late in the year, with watering reduced, is normal dormancy.
A few things people ask
Can an amaryllis bulb be grown in water or wax?
Bulbs sold in wax or on glass stands flower once using stored energy. Moved to soil afterward, they can recover and flower again in later years, though waxed bulbs often need careful unwrapping first.
Should the flower stalk be staked?
Tall stalks with heavy blooms can topple. A stake, or a heavy pot, keeps them upright. Turning the pot also keeps growth straight.
When should the stalk be cut?
Cut it down once the flowers have faded and the stalk starts to wither, leaving the leaves in place.
Are amaryllis toxic to pets?
Yes. The ASPCA lists amaryllis as toxic to dogs, cats, and horses, and the bulb is typically the most concentrated part. Keep pots and loose bulbs out of reach. Next reads: Cyclamen Care Guide: Cool Light, Bottom Watering, and the Summer Rest, Kalanchoe Care Guide: Light, Water, and Getting It to Rebloom and Begonia Care Guide: Light, Water, and Varieties.