a product that I think is called COIX, which I think is a product made from the shell of cocoanuts. I think that it is sterile--at least when purchased--and can be used for starting seeds or cuttings, as well as growing plants with fertilizing and watering. A source would be appreciated. (I have checked Google, but they list it as an herb, and uses are herbal. I did not find any reference to growing seeds or plants.) Any assistance would be appreciated. When responding kindly put the word "GardenWebber" in the subject line to keep your e-mail out of my junk pile. THANK YOU!