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 pre-digested into readily usable peptides for plants and soil microbes.