Pennington Ironite Fertilizer
Best mineral supplement for homeowners seeking a deep green lawn.
This mineral-rich supplement focuses on deep greening rather than rapid growth, making it an ideal choice for maintaining a lush, healthy lawn. Its slow-release, natural formula is safe for families and pets, providing consistent, season-long nourishment for grass, shrubs, and trees.
$41.22
at
Walmart
More Ironite options
Who it's for
- Homeowners seeking a lush, vibrant lawn without constant mowing.
- Gardeners wanting one supplement for their entire landscape.
- Property owners concerned about maintaining clean hardscape surfaces.
Who should skip it
- Users looking for a single-step, all-in-one feeding solution.
- Inexperienced gardeners who struggle with precise measurement and calibration.
- Landscapers dealing with extremely high-alkaline soil conditions.
Performance breakdown
Color Enhancement
High iron content delivers a deep, vibrant green without rapid overgrowth.
Safety Profile
Natural-based formula provides peace of mind for households with pets.
Versatility
Effective across lawns, shrubs, and flowers throughout the entire year.
Feeding Longevity
Slow-release granules ensure consistent nutrient delivery over an extended period.
Application Ease
Granular form spreads easily with standard equipment for uniform coverage.
Soil Nutrient Efficiency
Optimizes existing soil nutrients rather than forcing aggressive, artificial growth.
Key Specs
NPK Ratio
1-0-1
Fertilizer Type
Natural
Form
Granules
Recommended Use
Lawn
Release Rate
Slow
Coverage
5000 sq. ft.
Application Season
All Seasons
Pet/Child Safe
Yes
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