Plant bulb without undue delay. If you must delay planting, store in a cool place, 40°F to 50°F. Never expose bulb to temperatures below freezing (0°C or 32°F).
Find a pot at least 2” larger than the diameter of the bulb and bury the bottom 2/3 in potting soil. Choose a potting soil which drains well. You will need room for watering so don’t fill the pot with too much soil. Press firmly around the bulb to be sure that it’s steady but be careful not to damage the roots. Place your potted amaryllis in a light, constantly warm position to encourage growth. As the first floral stalk lengthens, rotate pot through a half turn every day or so. This keeps it from bending towards the strongest light source. If necessary, stake foliage and stalks.
Soil should be kept only slightly moist - by adding tepid water around the bulb if necessary. Over watering will inhibit root formation - and any water found standing in the saucer should be emptied out. Once the flower stalk is well out of the bulb, water more frequently.
The Amaryllis is a rapid growing plant when developing in warm room temperatures and in direct sunlight. The beautiful flowers last for about two weeks.