Southern Ag Iron Granules Catalog Outdoor, Lawn & Garden Gardening Southern Ag Iron Granules Manufacturer : Southern Ag Description • No mixing/No spraying - use as a granular fertilizer • Correct Iron deficiency in acid loving & tropical plants • Acidifies soil, lowers pH, and corrects high alkalinity CONTAINS: 30% Iron from Ferrous Iron Sulfate. USE ON: Lawns, shrubs, trees and gardens. FOR: Correction and prevention of iron deficiency and high pH. Iron deficiency appears as intense yellowing of young growth. RATE: Dry application: .25 lbs. per 100 sq. ft. (2 lbs. per 1,000 sq. ft.) To reduce pH, .5 - 1 lbs. per 100 sq. ft. APPLICATION: Spread over treatment area and water in. Rates Please contact us for current pricing and availability.