Best Ammonium Sulfate 21-0-0 Turf Granular Fertilizer 50 lb. Bag
Best quick-acting solution for homeowners seeking rapid lawn greening and health.
Achieve a lush, vibrant lawn with Best Ammonium Sulfate fertilizer. This 50 lb. bag provides a 21-0-0 analysis, delivering quick-acting, water-soluble nitrogen to stimulate vigorous growth and a deep green color. Its high 24% sulfur content also aids in thatch decomposition by promoting beneficial soil micro-organisms, enhancing turf density and overall health. Formulated as a screened crystalline material, this fertilizer offers an economical and effective solution for immediate results on your lawn.
$29.95
Owner Satisfaction
4.6
/ 5
Category Rank
1927
/ 4348
#1927 in Fertilizers
Price vs Category Average
-51%
Below average
Analysis
2100
/ --
Who it's for
- Homeowners wanting immediate visual results for their lawn
- Gardeners seeking to boost plant health and chlorophyll production
- Landscapers managing turf in high pH or alkaline soil regions
Who should skip it
- Novice applicators prone to over-fertilizing or uneven distribution
- Busy property owners preferring low-maintenance, slow-release feeding schedules
- Users with naturally acidic soil conditions needing pH stability
Performance breakdown
Greening Speed
High-nitrogen formula delivers visible color improvements in record time.
Soil Health Impact
Significant sulfur content actively supports beneficial microbial activity and thatch breakdown.
Application Efficiency
Granular consistency ensures even distribution across large residential lawn areas.
Nutrient Availability
Water-soluble nitrogen provides immediate uptake for stressed or hungry turf.
Coverage Value
Fifty-pound bag offers substantial square footage for professional-grade lawn maintenance.
Release Control
Quick-release nature requires careful timing to avoid potential nitrogen burn.
Key Specs
Analysis
21-0-0
Nitrogen
21.000%
Phosphorus
0.000%
Potassium
0.000%
Secondary Nutrient
Sulfur (S) 24.000%
Form
Screened crystalline material
Solubility
Water soluble nitrogen
Package Weight
50 lb
Features
- Provides quick greening with fast-acting nitrogen
- High sulfur content aids thatch breakdown
- Stimulates soil micro-organisms for healthier turf
- Promotes a deep green grass color
- Economical source of soluble nitrogen
- Water-soluble for rapid nutrient uptake
- Granular form for easy application
- Quick release for immediate results
What customers say
Customers overwhelmingly praise this fertilizer for its rapid, dramatic impact on turf color and density, delivering an instant green up. Its granular consistency allows for easy, uniform spreading. Users value the concentrated nitrogen content, noting excellent coverage and strong overall value compared to lower analysis options. The inclusion of sulfur is appreciated for promoting healthier plant metabolism. However, reviewers stress that this high potency demands precise application and immediate, thorough watering to prevent potential burn. When handled correctly, this product is viewed as a top performer for achieving exceptional lawn results quickly.
Know before you buy
Because this is a quick-release, water-soluble nitrogen source, you can expect to see a noticeable green-up in your lawn relatively quickly after the first watering.
No, this is a 21-0-0 formula, meaning it provides nitrogen and sulfur exclusively. It is designed specifically to boost top-growth and color rather than root development or overall soil nutrient balance.
The 24% sulfur content helps break down thatch by encouraging beneficial soil micro-organisms. It also plays a key role in improving turf density and maintaining a deep, healthy green color.
Yes, it is suitable for most lawn types. However, because it is a quick-release synthetic fertilizer, it is important to apply it evenly and water it in thoroughly to avoid the risk of burning the grass.
A single 50 lb. bag provides coverage for approximately 10,400 square feet. Always calibrate your spreader according to the application rate to ensure even distribution.
While it is excellent for a quick nitrogen boost, it lacks phosphorus and potassium. It is best used as a supplemental tool for greening or as part of a broader fertilization program that includes a balanced fertilizer later in the season.
Still have a question?
Ask Hayley anything about this product before you decide.