Question
I have some very OLD solid white plants in my garden that the neighbors call lillys but are really Amaryllis bulbs. they put off these enormous seed pods along the ground. there are hundreds of seeds... strange shapes and sizes ... will these grow if planted?  

Answer
Amaryllis Seeds are found in the seedpod.  When the flowers bloom, you can hand pollinate the flowers.  You will find illustrated instructions on hand pollination of Amaryllis at the LandsPro website:

http://www.landspro.com/page009.htm

They make an excellent pint of which you should be aware: 'Keep in mind that if you use the pollen and stigma from the same flower, you may eventually produce weaker bulbs.'  Undoubtedly this is happening by itself, but you'll be doing your Amaryllis plants AND yourself a favor by taking control of the random pollination done now.

Once the Amaryllis has been pollinated, seedpods form rapidly.  They mature within four or five weeks.  Seeds are VERY thin.

The seedpod turns yellow and shrinks, then dries.  Inside the shrunken pod is where mature seeds are stored.

The seedpods should be picked as soon as they turn yellow and begin splitting open.  Open a pod over a piece of white or waxed paper so you can see them.  Remove seeds and air dry for a few days before you plant them.  Plant the seeds in regular potting soil on the surface, barely covering. Keep constantly moist at room temperature.

It takes around 5 years for new Amaryllis plants to grow big enough to flower.

The original bulb that you harvested seeds from should be producing offshoot bulbs.  You can divide them and get new plants, too.  Offshoots bloom in three years or less.  New Amaryllis plants should be ready to flower in 3 to 4 years.

A long term project, but you know how time flies.  Good luck -- and if you need any further instructions here let me know.  Thanks for writing.