True Organic all-purpose plant food is blended from natural and organic farm-grade ingredients used to make fertilizers for America's organic produce growers. The ingredients are proven to be extremely beneficial for both plants and soil, including seabird guano, a great source of phosphorous and slow release nitrogen. Shrimp shell and crab shell meal, a premium, sustained supply of calcium and nitrogen for soil and plants. Poultry manure, ethically sourced from organically raised birds, unlike other "organic" fertilizers that source from conventional farms. Soybean meal, organically sourced. No sludge, fillers or additives.