An amaryllis bulb should fit snugly (but not too tightly) into its pot, therefore always try and choose which pot will allow a one inch margin right around the bulb. Layer the bottom of the pot with half an inch of loose gravel, and the bulb should be placed so that it is half way out of the soil. Always make sure that you use a good commercial potting soil and make sure to firm the soil around the roots of the bulb. Water the soil well, and allow it to drain. Do not water the bulb again until you see the first signs of growth. This will vary from within a few days to a few months depending on the season.
If you want to ensure a healthy, blooming plant next year, it is important to take care of your Amaryllis after the show of blooms.
How To Grow Amaryllis Bulbs – Keep the plant in the sun and feed and water it while the new foliage grows. As the leaves turn yellow, cut them close to the top of the bulb. Stop watering and feeding and give them a month or so of rest. To promote growth, wash away an inch of the old soil and give your bulb a new batch of top soil with ½ tsp. of bone meal.