Organic means derived from compounds like manure, compost or worm castings, rather than inert compounds like minerals or salts. We process minerals and salts after they are mined to deliver liquid fertilizers that are immediately accessible as food for your plant roots and which run clean without clogging hydroponic equipment. Many of our products also contain organic compounds in addition to minerals. Some of our products are completely organic and OMRI listed, but all of our products are designed to be as natural as possible. We believe a more important question to ask is whether or not a product is contaminated with pesticides or toxic compounds. Our products are not.