wrestlervic saidMy amaryllis bulb is flowering for the fourth year in a row and not only does it have three flower heads on the one stalk, but a second stalk is coming up behind it.
To make your bulbs last year after year, cut off the stalk when the flower and stalk wither, but let the leaves grow and give it ample sunshine for about 8 months. Water like any houseplant when dry (don't let it sit in water though).
Then cut off all the leaves and put in a semi-dark area and don't water for about two months. Then water it once and put into the light and wait for the stalk to come out again in about two weeks. Then water when dry.
I've been growing amaryllis plants for 12 years (I can't kill them - they're indestructible). I've even cross pollinated them, developed seeds, and grown more plants from these (and the babies flowered).
You're correct about cutting back the stalk and watering, but you don't have to put it in a dark area for two months. The amaryllis plant does not have a dormancy / hibernation stage as some other plants do. It will re-bloom naturally on it's own schedule.
The flower shoots take about 2 years to develop within the bulb. If you want to force a bloom at a specific time of year, all you have to do is stop feeding (fertilizer) 3-4 months before the expected bloom time, and stop watering 12 weeks before. The plant will react to the "near death" shock by desperately using the water and energy stored in the bulb for one final act of sexual reproduction (the flower). Of course, as soon as the flower stalk appears, you begin to water and fertilize again so that the plant lives a nice healthy life.Congratulations on such a beautiful amaryllis. You've done well!