Fast Green-Up
Readily available nitrogen helps improve color and growth when grass needs feeding.
Ammonium Sulfate 21-0-0 Fertilizer
When your lawn needs more nitrogen, Ammonium Sulfate 21-0-0 helps bring back greener color and stronger growth with fast-acting nitrogen and 24% sulfur. Choose granular or sprayable.
Choose Application Type
Select Size:
Not Sure?
1. What size is your lawn?
Fast Shipping99% of orders ship same day
Proven ResultsProfessional-grade products
Made in the USAQuality ingredients
Expert SupportReal lawn experts to help
WHY AMMONIUM SULFATE WORKS
Get Greener Grass When Your Lawn Needs Nitrogen
Fast-Acting Lawn Feed21% Nitrogen + 24% Sulfur
Nitrogen + Sulfur
Feeds your lawn with two essential nutrients that support healthy, active turf.
Two Ways to Apply
Choose spreader-friendly granules or a dissolvable sprayable option.
Use Only When Needed
Best for actively growing lawns that need more nitrogen—not dormant or stressed turf.
Product comparison
Compare your options
See the key differences before you buy.
Viewing now
Ammonium Sulfate 21-0-0
From $39.99
Best for
A quick nitrogen boost when your lawn needs feeding.
Primary benefit
Fast Green-Up — Readily available nitrogen helps improve color and growth when grass needs feeding.
When to apply
When nitrogen is needed.
Key differences
Nitrogen (N)
21%
Potash (K₂O)
0%
Sulfur (S)
24.0%
Product Form
Granules, Dispersible Granules
Nitrogen Release
Quick-release nitrogen
Feeding Duration
Quick, short-term feeding
Almighty 20-0-10
From $39.99
Best for
Regular lawn feeding for steady growth, deep green color and longer-lasting results.
Primary benefit
Fast Green-Up — See a quick response, rich green color, and balanced feeding.
When to apply
During active growth
Key differences
Nitrogen (N)
20%
Potash (K₂O)
10%
Sulfur (S)
4.6%
Product Form
Granules
Nitrogen Release
Quick + 45% controlled-release nitrogen
Feeding Duration
Up to 6–8 weeks
Swipe to compare
1 / 2
Specifications are based on available product information.
Fast Green-Up When Your Lawn Needs Nitrogen
Ammonium Sulfate 21-0-0 gives actively growing grass a quick nitrogen boost to help restore greener color and stronger growth. With 21% nitrogen and 24% sulfur, it's a straightforward choice when your lawn needs feeding without a long-lasting slow-release formula.
Why Choose Ammonium Sulfate?
- Fast-Acting Nitrogen: Helps improve lawn color and growth when nitrogen is running low.
- 24% Sulfur: Supplies an essential nutrient that supports healthy turf.
- Two Ways to Apply: Choose granular for a broadcast spreader or sprayable for a tank sprayer.
- Targeted Feeding: A useful option when your lawn needs a quick nitrogen boost rather than extended feeding.
Best for actively growing lawns that need nitrogen. Avoid applying to dormant or drought-stressed grass, and follow the application directions for your selected formula to prevent overfeeding.
Product Snapshot
Product Features & Key Details
21% Nitrogen
Fast-acting nitrogen for green-up and active growth.
24% Sulfur
Supports normal turf nutrition and nitrogen use.
Quick Release
An immediate feeding, not a long-lasting slow-release fertilizer.
Two Application Types
Choose granular for a spreader or sprayable for a tank sprayer.
HOW TO APPLY
Application Rates & Instructions
Simple directions. Professional results.
01
Application Rate
4–5 lb per 1,000 sq ft
02
Equipment
Broadcast Spreader or Tank Sprayer
03
Apply at the Right Time
When nitrogen is needed.
04
After Application
Water in thoroughly.
Product resources
Product Information & Resources
Everything you need to understand, apply, and reference this product.
Guaranteed Analysis
⌄
Total Nitrogen (N)21.0%
21.0% Ammoniacal Nitrogen
Sulfur (S)24.0%
Derived From:
Ammonium sulfate
Spreader Settings
⌄
Find the right starting setting for your spreader.
Select your spreader to see the setting.
Choose Granular or Sprayable before using application directions. Broadcast spreader settings and 4–5 lb per 1,000 sq ft are for GRANULAR only. For SPRAYABLE, use the sprayable rate and calibrate your sprayer for even coverage; do not use spreader settings. Follow the product label.
Spreader settings & calibration guide →
Specifications
⌄
Nitrogen ReleaseQuick-release nitrogen
Feeding DurationQuick, short-term feeding
Documents & Labels
⌄
Customer Reviews
