Greenway Biotech Ferrous Sulfate Heptahydrate Fertilizer
Best high potency iron supplement for achieving a lush green lawn.
A potent iron supplement that quickly corrects chlorosis and restores deep green color to tired lawns and plants. Its highly soluble granular form makes it easy to mix and apply, providing a fast-acting solution for nutrient-deficient soil.
$18.99
at
Amazon
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Who it's for
- Homeowners seeking immediate visual improvement for yellowing turf and foliage
- Gardeners preferring liquid feeding for more uniform nutrient distribution
- Landscapers managing alkaline soil conditions for specific ornamental species
Who should skip it
- Users with extensive hardscaping who require careful application boundaries
- Beginners unfamiliar with precise dosage and timing for chemical fertilizers
- Busy property owners wanting a low-maintenance, long-term nutrient solution
Performance breakdown
Solubility Speed
Dissolves rapidly in water, preventing clogs in sprayers or irrigation systems.
Nutrient Concentration
Delivers a potent 20% iron punch for rapid chlorosis correction.
Application Versatility
Works seamlessly for both soil drenching and direct foliar feeding.
Greening Efficacy
Restores deep, vibrant chlorophyll levels in yellowing foliage within days.
Granule Consistency
Uniform particle size ensures predictable mixing ratios for every batch.
Storage Stability
Requires airtight storage to prevent clumping from ambient humidity exposure.
Key Specs
Weight
1 lb
Active Ingredient
Ferrous Sulfate Heptahydrate (FeSO4*7H2O)
Iron Content
20% Fe
Form
Granular
Solubility
Highly water soluble
Primary Use
Iron deficiency correction
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