Most people grow an amaryllis from a bulb, but if you take the time to pollinate your amaryllis yourself by hand, you can grow an abundance of seeds which are then easy to sprout. The challenge is that in most parts of the country, the amaryllis blooms only in the winter, when bees and other natural pollinators are not available. This means that once your plant blooms, it will be up to you to pollinate it by hand and then wait for the flower to die and collect the seeds.
Wait for your amaryllis to bloom. Take a clean, dry fine-tipped artist's paint brush and rub the brush on the powdery ends of the tall stamens until the brush is well-covered with the yellowish powder.
Locate the pistil, the slightly shorter stem just below the stamen, with a sticky bulb at the top end. Rub the brush on this bulb, transferring as much of the powdery pollen to the bulb as possible. The more powder that transfers, the better.
Watch for a bulb to form at the base of the flower as they flower wilts and dies. When the bulb turns yellow and begin to open pull it off and open it, collecting the seeds from within.
Fill a growing tray with damp vermiculite and place the seeds in the tray. Cover the seeds with a thin layer of vermiculite and keep in a warm location, out of direct sun. Spray with a mister to keep the soil damp but not too wet. Within 3 weeks you will see a grass-like growth. This is your amaryllis.
Keep the young plants moist with a mister. In approximately 5 to 6 weeks bulbs will form. Transplant the bulbs to individual pots filled with vermiculite and potting mix. Your bulbs will take 2 to 3 years to become large enough to support a plant that will bloom.