Monterey Dr. Iron Acidifier Granules Iron and Elemental Sulfur Acidic Fertilizer, 21lb

This product corrects iron deficiency - when your garden or lawn is yellowing in color, that's a sign of an iron deficiency. Dr. Iron helps to correct this deficiency. The product is made up of 22% iron and 55% sulfur. Dr. Iron is non-staining as it is applied in the oxide form, so it will not stain concrete sidewalks, driveways, patios, etc. Until it has been in contact with soil moisture and converts to the sulfate form. This product has a variety of uses- it can be used on turf, flowers, vegetables, ground-covers, shrubs, and anywhere in the garden where plants are pale or yellowing. The combination of iron and sulfur makes application and plant uptake easy.