I saw this in a video from "Amaryllis Man" Charlie Johnson on YouTube, and have done it twice now with excellent results. The first time was with some older orange Hemerocallis seeds. I only floated a few, and had almost all of them germinate, but only three survived the transplant process. As fast as those things spread, I ended up with 13 bulbs and bulblets which are now companions to my brugmansias. Of course, they won't bloom for a few years, but I'm looking forward to it.

These are seed from my original red amaryllis. Unfortunately, the Green Goddess did not have any seeds this year. I was looking forward to see what colors the seedlings grew into, but maybe next year. That one is slow to pup and I don't remember ever getting seeds from it.

I did a closeup to show you how they grow (sorry the closeup is blurry). I plant them once the seed falls off. I found it's important to keep them away from any heat source, because the warm water causes the leaves to rot.

Here's a link to the YouTube Video.

How to float amaryllis seed