How to Care for Amaryllis

Amaryllis (Hippeastrum hybridum) is a large-bulbed flowering plant prized for its dramatic, trumpet-shaped blooms on tall, sturdy stalks. It is an easy grower that rewards a clear cycle of active growth followed by a dry rest period, making it a favorite for indoor winter flowering and outdoor summer display.

Light

Give amaryllis bright indirect light to full sun. Indoors, a south- or west-facing windowsill is ideal while the plant is in leaf and flower. Strong light keeps the flower stalk sturdy and upright; too little light produces a tall, leaning, weak stalk that may need staking. When grown outdoors after the last frost, acclimate it gradually to direct sun to prevent leaf scorch.

Water

Water moderately during the active growth and flowering period, keeping the soil evenly moist but never waterlogged. Start watering sparingly when you first pot a dormant bulb, then increase as the flower stalk and leaves emerge. During the dormant rest period, withhold water almost entirely and keep the bulb dry. Always empty the saucer so the base of the bulb never sits in standing water, which causes rot.

Soil & Potting

Use a rich, well-draining potting mix; a general houseplant mix amended with extra perlite or coarse sand works well. Choose a pot only about 2.5 to 5 cm (1 to 2 inches) wider than the bulb, since amaryllis flowers best when slightly pot-bound. Plant the bulb high, leaving the top third to half sitting above the soil line. Firm the soil gently and ensure the pot has drainage holes.

Humidity & Temperature

Average household humidity is fine. Amaryllis prefers warm conditions of about 18 to 24 C (65 to 75 F) during active growth. Slightly cooler temperatures around 15 to 18 C (60 to 65 F) once buds show color help the flowers last longer. Protect it from cold drafts and never expose it to frost, as the bulb and foliage are not cold-hardy.

Feeding

Feed every two to three weeks with a balanced or slightly higher-potassium liquid fertilizer during active leaf growth, which builds up the bulb for next year's bloom. Continue feeding after flowering while the leaves remain green and photosynthesizing. Stop feeding entirely once you begin the dormant rest period.

Propagation

Amaryllis propagates most reliably by offset bulblets that form around the base of the mother bulb. When repotting, gently separate well-developed offsets and pot them individually; they may take two to three years to reach flowering size. Propagation from seed is possible but slow, often taking several years to bloom.

Repotting / Pruning

Repot only every three to four years, ideally at the end of the dormant period just before restarting the growth cycle, refreshing the soil and topdressing. After flowers fade, cut the spent flower stalk down to about 5 cm (2 inches) above the bulb, but leave the leaves intact to feed the bulb. Remove leaves only once they yellow naturally during the induced dormancy.

Common Problems & Pests

Watch for red blotch (a fungal disease showing red streaks on the stalk and bulb), which is worsened by overwatering and poor airflow. Bulb rot results from soggy soil or planting too deep. Common pests include mealybugs, spider mites, and the amaryllis-specific bulb mite; treat infestations promptly by wiping foliage and applying insecticidal soap. A stalk that flops usually signals insufficient light.

Seasonal Care Tips

To force winter bloom, induce dormancy in early autumn: stop watering, let the foliage die back, and store the potted bulb in a cool, dark, dry place for 8 to 12 weeks. Then bring it into warmth and light and resume watering to trigger a new flower stalk. In spring after frost danger passes, potted amaryllis can be moved outdoors for the summer to build strength, then brought back in before the first frost.