Our Germinator is a blend of compost, pachamama earthworm castings, coir fiber, and vermiculite. Our Germinator holds water well so be sure to check each time before you water. Simply fill your seed tray or small pots and plant your seeds. Always be sure not to plant your seeds too deeply. Pachamama Earthworm Castings, Farmstyle Compost, Perlite, Coarse Granite Sand, Coir Fiber. 6 Pounds.