Amaryllis

Bright light with some direct sun (right in the window where sun actually hits the leaves. A strong grow light 4-6 inches away can substitute) during active growth. Once in bloom, move to a slightly cooler, lower-light spot to prolong flower life. No light is needed during dormancy.

Not particularly demanding. Standard indoor humidity is acceptable. Good air circulation helps prevent fungal issues on the blooms.

Well-draining potting mix high in organic matter. A blend of equal parts sterilized potting soil, peat moss, and perlite or coarse sand works well. Plant the bulb with the neck above the soil surface. Pot only 1 inch wider than the bulb diameter; the plant prefers a snug container.

Root rot from soggy soil during dormancy or early establishment. Narcissus bulb fly larvae can damage bulbs. Fungal diseases can affect blooms in humid, stagnant conditions. Red blotch (Stagonospora) is a fungal disease that causes red streaks on leaves and flower stalks.