Bush Doctor® Wholly Mackerel™ (3-1-0) is a liquid plant nutrient derived from marine fish species and is an enzymatically digested product. It provides readily available amounts of organic nitrogen, phosphorus and potassium to growing plants. This extra-strength fish fertilizer contains 20 different amino acids, 13 vitamins and 8 minerals including manganese, iron, copper and zinc. These nutrients are available to plants when used as a root drench application or when applied as a foliar spray. The proteins in Wholly Mackerel are predigested into readily usable peptides for plants and soil microbes.