Espoma EOSR30 Organic Summer Fertilizer, 30-Pound Made from feather meal poultry manure iron oxide and elemental sulfur Contains bio-tone microbes and 2-percent non-staining iron 8-0-1 formulation 30 lbs Feeds up to 5,000 sq ft Made from feather meal poultry manure iron oxide and elemental sulfur Contains bio-tone microbes and 2-percent non-staining iron 8-0-1 formulation 30 lbs Feeds up to 5,000 sq ft Environmentally friendly