Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 Pounds
Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 Pounds
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Greenway Biotech

Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 Pounds

5 stars out of 4 reviews
(5.0)|
4 ratings
Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 PoundsAmmonium Sulfate 21 0 0 Fertilizer Greenway Biotech Brand 5 PoundsGreenway Biotech Ammonium Sulfate Fertilizer 21 0 0 2 PoundsAmmonium Sulfate 21 0 0 Fertilizer Greenway Biotech Brand 10 PoundsAmmonium Sulfate Fertilizer 21 0 0 2 X 25 Pounds Great Lawn FertilizerAmmonium Sulfate Fertilizer 21 0 0 100 Water soluble Lawn Fertilizer 25 Pounds
Shape:5 Pounds

Key item features

  • Ammonium Sulfate Fertilizer 21-0-0 100% Water soluble Lawn Fertilizer 5 Pounds
  • Ammonium Sulfate Fertilizer 21-0-0

    Premium nitrogen and sulfur fertilizer for professional results. Fast-acting, 100% water-soluble formula provides rapid nutrient delivery and supports soil acidification for alkaline conditions—perfect for lawns and acid-loving plants like blueberries.

    🔬 Lab Tested & Verified 📋 CDFA Registered ✓ Low Heavy Metals 🏭 Made in USA Since 1989
    See the Difference in Days
    Day 1 💧 Apply & Water
    Day 3-5 🌱 First Signs
    Day 7-10 🌿 Visible Greening
    Day 14+ 🌾 Full Results
    FEATURES
    • 21% Nitrogen: Fast-acting ammonium nitrogen (NH₄⁺) for rapid green-up and vigorous vegetative growth
    • 24% Sulfur: Essential secondary nutrient supports chlorophyll production, protein synthesis, and enzyme activation
    • 100% Water Soluble: Dissolves completely for immediate nutrient availability through soil drench or fertigation
    • Acidifying Action: Gradually lowers soil pH over time—ideal for alkaline soils and acid-loving plants
    • Dual-Purpose Formula: Provides both nitrogen nutrition and sulfur supplementation in one application
    • Low Heavy Metals: Third-party tested to exceed EPA safety standards for garden and agricultural use
    DERIVED FROM

    Ammonium Sulfate (NH₄)₂SO₄

    Manufactured through the reaction of ammonia with sulfuric acid, producing a stable crystalline salt. This synthetic process ensures consistent purity and nutrient content in every batch. Our ammonium sulfate is produced in the USA under strict quality controls, with each lot tested for nutrient analysis and heavy metal content to meet CDFA registration requirements.

    PERFECT FOR THESE APPLICATIONS
    🌾
    Lawns
    4 lb/1000 sq ft
    🥬
    Vegetables
    2-3 tbsp/plant
    🫐
    Blueberries
    1/4 cup/bush
    🪴
    Houseplants
    1 tbsp/gallon
    COMMON PROBLEMS? WE HAVE SOLUTIONS
    😟 Yellow, patchy lawn?
    ✅ 21% nitrogen delivers visible greening in 7-10 days
    😟 Blueberries not thriving?
    ✅ Acidifying action creates ideal pH 4.5-5.5 conditions
    😟 Slow plant growth?
    ✅ 24% sulfur boosts chlorophyll and protein synthesis
    😟 Alkaline soil issues?
    ✅ Gradual pH reduction improves nutrient availability
    WHY GROWERS CHOOSE THIS FORMULA
    💪 21% Fast-Acting Nitrogen

    Water-soluble ammonium nitrogen for rapid green growth and vigorous development. Visible results in 7-10 days.

    🔬 24% Essential Sulfur

    Supports chlorophyll formation, protein synthesis, and helps acidify alkaline soils over time.

    ⚡ 100% Water Soluble

    Dissolves quickly for immediate availability through soil application or fertigation systems.

  • By Greenway Biotech, Inc.
Current price is $34.99
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Wed, Feb 25
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Sold and shipped by Greenway Biotech, Inc
4.6875 stars out of 5, based on 32 seller reviews(4.7)
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Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 Pounds
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Comparison Chart:
Npk ratio21-0-0Ammonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 Pounds21-0-0VPG Fertilome Ammonium Sulfate Synthetic Fertilizer, 4 lbs21-0-0Ammonium Sulfate 21-0-0 Fertilizer from Plantco with 21% Nitrogen & 24% Sulfur | Ideal for Lawns, Azaleas, Blueberries | Lowers pH in Alkaline Soil (2 lb bag)-Southern Ag Hydrangeas Synthetic Fertilizer, 5 lbs21% N,24% SAC Alpha Chemicals Ammonium Sulphate Fertilizer, 60 g
Fertilizer typeSyntheticAmmonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 PoundsSyntheticVPG Fertilome Ammonium Sulfate Synthetic Fertilizer, 4 lbsSyntheticAmmonium Sulfate 21-0-0 Fertilizer from Plantco with 21% Nitrogen & 24% Sulfur | Ideal for Lawns, Azaleas, Blueberries | Lowers pH in Alkaline Soil (2 lb bag)SyntheticSouthern Ag Hydrangeas Synthetic Fertilizer, 5 lbsSyntheticAC Alpha Chemicals Ammonium Sulphate Fertilizer, 60 g
FormGranulesAmmonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 PoundsLiquidVPG Fertilome Ammonium Sulfate Synthetic Fertilizer, 4 lbsGranulesAmmonium Sulfate 21-0-0 Fertilizer from Plantco with 21% Nitrogen & 24% Sulfur | Ideal for Lawns, Azaleas, Blueberries | Lowers pH in Alkaline Soil (2 lb bag)LiquidSouthern Ag Hydrangeas Synthetic Fertilizer, 5 lbsCrystalsAC Alpha Chemicals Ammonium Sulphate Fertilizer, 60 g
Rec. useLawnAmmonium Sulfate 21-0-0 Fertilizer "Greenway Biotech Brand" 5 PoundsPlantVPG Fertilome Ammonium Sulfate Synthetic Fertilizer, 4 lbsFlowerAmmonium Sulfate 21-0-0 Fertilizer from Plantco with 21% Nitrogen & 24% Sulfur | Ideal for Lawns, Azaleas, Blueberries | Lowers pH in Alkaline Soil (2 lb bag)ShrubSouthern Ag Hydrangeas Synthetic Fertilizer, 5 lbsPlantAC Alpha Chemicals Ammonium Sulphate Fertilizer, 60 g
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Showing 1-1 of 1 review

Apr 1, 2019
Walmart customer
Item details
Shape: 2 Pounds
5 out of 5 stars review

It works!

Bought this to lower ph in garden spot. Two weeks in and ph has dropped a full point so far

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