Greenway Biotech Ammonium Sulfate Fertilizer
Best high nitrogen boost for acid loving plants and lawns.
This is the go-to solution for acid-loving plants that need a quick boost. Its high solubility makes it incredibly versatile for irrigation systems, though you must be careful with application rates to avoid over-acidifying your soil. It’s a precise, no-nonsense tool for achieving lush, vibrant growth in alkaline environments.
$24.99
at
Greenway Biotech
More Ammonium Sulfate options
Who it's for
- Gardeners seeking quick greening and vigorous plant growth
- Growers of blueberries, azaleas, and other acid-loving species
- Homeowners wanting a versatile fertilizer for liquid or dry application
Who should skip it
- Users with already acidic soil or sensitive vegetable crops
- Inexperienced gardeners prone to over-fertilizing their delicate plants
- Busy individuals looking for a low-maintenance, set-it-and-forget-it solution
Performance breakdown
Soil Acidification Power
Highly effective at lowering pH for acid-loving species like blueberries.
Solubility Efficiency
Dissolves completely without residue, making it perfect for irrigation systems.
Nutrient Density
Delivers a potent punch of nitrogen and sulfur in every application.
Application Versatility
Adapts seamlessly to soil drenches, fertigation, or standard drip setups.
Growth Response Speed
Fast-acting formula provides visible green-up shortly after application.
Formulation Purity
CDFA-registered quality ensures consistent, reliable results for your garden.
Key Specs
NPK Ratio
21-0-0
Nitrogen Percentage
21.0%
Phosphorus Percentage
0.0%
Potassium Percentage
0.0%
Sulfur Content
24%
Package Weight
2.0 lbs
Form
Granular
Solubility
100% Water Soluble
Release Type
Fast Release
Primary Benefit
Acidifying
Know before you buy
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