Grow More? Fertilizers are formulated to supply sufficient amounts of extra nutrients for high yields. High solubility, purity and the special forms of nitrogen, phosphorus and potassium make Grow More? Fertilizers the ideal product. 20-10-20 is fast acting in foliar sprays or liquid fertilizer injector systems, designed for cool temperature climates when plants need extra vigor and growth. Contains 60% nitrate nitrogen, 40% ammoniacal nitrogen.