GROBEST Fish Hydrolysate (a 100% organic liquid fish fertilizer) is a natural way to supply an abundance of minerals and vitamins to your plants, whether you are growing roses, vegetables, fruits, ferns, or even houseplants. Provides many benefits but it is especially known for providing nitrogen and phosphorus that promote rapid plant growth, as well as the complete fats and proteins that microorganisms need. GROBEST a hydrolysate, processed with enzymes at cool temperatures to retain all the beneficial components.