Diamond Brand® Ferrous Sulfate Monohydrate (FeSO₄·H₂O)

The highest-iron ferrous sulfate available — 30% Fe, 18% S — in a free-flowing fine granule that's OMRI Listed for organic use. Ideal for professional growers, turf managers, and large-scale agricultural operations.

Why Choose Diamond Brand?

• Maximum iron concentration — more Fe per ton than heptahydrate or dried forms
• Minimum interior moisture — just one water molecule (15% by weight) for superior handling and shelf life
• Uniform fine granule — US Sieve Mesh -16 +24, compacted and screened for consistent application
• OMRI Listed — approved for certified organic production
• Domestically produced — manufactured at QC Corporation's Cape Girardeau, MO facility

Applications

• Correct iron chlorosis and deficiencies in plants and soils
• Reduce soil alkalinity and lower pH
• Eliminate moss in turf and lawn settings
• Use as a micronutrient in blended fertilizer programs
• Feed supplement for swine, poultry, and livestock (iron deficiency prevention)

Package Details

• 50-pound bag | 40 bags per pallet
• Fine Granular form (US Sieve Mesh -16 +24)

Resources

• Sell Sheet & Technical Specifications
• Safety Data Sheet (SDS)
• OMRI Certificate