20 LB, 10,000 SQFT Coverage, Iron Plus Ast, Contains 10 Times More Iron, Combined With Patented Ast Polymer Formulation, Provides 10 Times The Protection Against Nutrient Run Off, Lasts All Season, Designed For Lawn Application, Contains Deltag, A Formulation Of Amino Acids, Vitamins & Enzymes For Increased Microbial Activity & Greater Plant Production, Bagged.