Growing Agave from Seeds
The best way to reproduce agave plants is to grow them from seeds. The seeds of an Agave plant are black in color and flat. They will also vary in size which will also determine the end size of the mature plant. When you are going to set the Agave plant inside the home you will want to choose smaller seeds.
Start the Agave seeds in a 50/50 mix of commercial soil and sifted crushed granite.
Cover the seeds in a small plastic pot with a small measure of the soil mixture. Usually this is about the diameter of the seed. They should not be placed very deep into the soil. They should be just below the surface.
Set the pot in a pan of distilled water and leave there until you see that the soil is wet. Remove the pot and then allow to drain for several minutes. Cover the pot with a plastic bag and secure with a rubber band.
Set on Windowsill
Set the seedling on a windowsill where it will receive diffused light instead of direct sunlight.
Wait 4 Weeks
The seedling will begin to sprout after about 4 weeks. They will emerge as a single leaf and be thicker near the base. Once the plant has grown to include 3 leaves, you can then move into a little larger pot.