Gold Label Roots is a highly concentrated root and growth stimulator with biological extracts of kelp, humic acids and high quality amino acids. We incorporate EDDHMA chelated Fe which is the most stable Fe available on the market.?Use Gold Label Roots for seedlings and cuttings through the vegetative phase of growth. Add 0.5 ml/liter continuously from first watering to 3rd week of flowering. Shake bottles before use, store at room temperature or in the refrigerator.