How can I make my amaryllis stronger...

If you grow your amaryllis in a very warm room, the flower stalk will probably require staking. Just insert one next to the stalk, taking care not to disturb the bulb in the container. Amaryllis bulbs may not bloom if they are in too large a pot. There should be no more than one inch of space on each side of the bulb. At least one third of the bulb should be above the soil line.