Amaranth is a versatile grain that has been used as a food source for thousands of years. It is native to the warm climate of Mexico but can also thrive throughout most of the Western and Midwestern United States. If you grow amaranth, you can benefit by harvesting and storing the seeds for the next growing season. When properly harvested, you can successfully gather hundreds of healthy seeds from a small amaranth crop.
Wait for the seeds to begin falling from the plant. Once you notice a few seeds on the ground, they are ready to harvest.
Cut the tops of the plants off with gardening shears. The seeds are in the red or green seed heads, so be sure to cut off as much of this as possible.
Lay the seed heads on a plastic sheet or aluminum foil. Let them sit in the sun until they feel brittle, usually about a week.
Crumble the seed heads with your hands to remove the seeds from the rest of the plant.
Separate the seeds from the rest of the plant matter.
Store the seeds in an airtight glass jar. The jar should be kept in a cool, dark and dry place.