Super K 3-4-7 is an organic fertilizer formulated for use on garden vegetables to meet the increased requirement for potassium. Fertrell Super K 3-4-7 is made with raw aragonite, bone char, chicken manure, crab meal, algae potash, and peanut meal. Formulated with more phosphorous and potassium than our Super 3-2-3 to help grow strong roots and produce large vegetables, Super K 3-4-7 also helps control nematodes that can impact fruit production.