Hydrofuze Ironite Substitute 50# 1-0-1 12% Calcium 9.2% Sulfur 4% Iron

1-0-1 Hydrofuze impregnates select macro and micronutrients onto every granule. Contains more iron for a deep green lawn without excessive growth. Helps grass use nutrients found naturally in the soil. For use on lawns, flowers, shrubs, vegetables, and trees. Non-staining and non-burning. Safe to use any season on any type of grass.  Similar to Ironite minieral supplement in that it is 1-0-1 that it contains soluble iron, but is from a more local source, so you are not paying for the higher freight cost and marketing cost of the name brand.  A standard use rate is  10 pounds per 1000 square feet.