Simplot Amm Phosphate
Best fertilizer for gardeners seeking stronger roots and healthier soil structure.
This granular powerhouse is the ultimate shortcut for building a robust root system from the ground up. While it lacks the organic label, its precise blend of ammonium nitrogen and sulfur delivers a level of nutrient efficiency and soil conditioning that natural alternatives simply struggle to match.
$57.77
at
Steve Regan Company
Who it's for
- Gardeners establishing new plantings or early-season crops
- Growers seeking a quick green-up and robust root start
- Farmers focused on soil health and improved crop yields
Who should skip it
- Beginners needing a low-risk fertilizer to avoid root burn
- Gardeners growing plants that require potassium for flowering or fruiting
- Horticulturists managing soil with already low pH levels
Performance breakdown
Root development potential
High phosphate concentration drives aggressive and healthy root system establishment.
Nutrient absorption efficiency
Ammonium nitrogen form ensures plants access nutrients quickly and effectively.
Soil health impact
Significant sulfur content actively improves soil structure and moisture penetration.
Application speed
Quick-release granular formula delivers immediate results for hungry garden beds.
Residue breakdown capability
Active chemical composition helps decompose organic matter for better soil tilth.
Versatility of use
Specialized NPK ratio is best suited for targeted root-focused growth cycles.
Key Specs
NPK Ratio
16-20-0
Total Nitrogen (N)
6.000%
Available Phosphate (P2O5)
20.000%
Soluble Potash (K2O)
0.00%
Sulfur (S) Content
13.000%
Package Weight
50 lb
Nitrogen Form
Ammonium
Fertilizer Type
Ammonium Phosphate
Fertilizer Form
Granular
Release Type
Quick Release
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