| Miracle-Gro is considered a chemical fertilizer. Organic fertilizers are made from the remains of once-living things and contain carbon elements. Chemical fertilizers are usually made from mineral salts and contain no carbon. Here are some organic fertilizer sources: Nitrogen: alfalfa meal, blood meal, coffee grounds, cottonseed meal, fish emulsion, seabird guano. Phosphorous: bone meal, rock phosphate Potassium: greensand, seaweed, kelp |
