Neptune's Harvest Fish Fertilizer 2-4-1 is an organic fertilizer made from fresh North Atlantic fish. Made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones. Also contains all the micro and macronutrients naturally found in fish. The nitrogen and other nutrients are chelated, so they are readily available for plants' consumption. Unlike fish emulsions, Neptune's Harvest retains the fish proteins and oils and has no unpleasant odor. Outperforms chemical fertilizers. OMRI listed.