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Gypsum

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$ 14.99
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$ 14.99
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$ 18.99
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Weight: 1 Pound

Gypsum Soil Amendment | Calcium Sulfate | Greenway Biotech®

High-Quality Gypsum

Transform your soil with our premium gypsum, a versatile mineral compound essential for agriculture, construction, and industrial applications. Mined from top-grade sources and meticulously processed, our gypsum delivers consistent quality for improving soil structure, reclaiming sodic soils, and providing crucial calcium and sulfur nutrients your plants need.

🌱 Soil Structure Enhancement

Breaks up heavy clay soils, improving drainage, aeration, and root penetration for healthier plants.

⚡ Sodic Soil Reclamation

Replaces excess sodium with calcium, restoring fertility and structure in salt-affected soils.

🎯 Essential Nutrients

Provides readily available calcium and sulfur for cell wall strength and protein synthesis.

AGRICULTURAL BENEFITS

Gypsum is widely used in agriculture to enhance soil health, boost crop yields, and address specific soil deficiencies.

  • Soil Amendment: Improves soil structure by breaking up heavy clay soils, promoting better drainage and root penetration
  • Sodic Soil Reclamation: Replaces excess sodium with calcium, restoring soil fertility and structure
  • Nutrient Source: Provides essential calcium (23%) and sulfur (18%), supporting cell wall strength and protein synthesis
  • pH Neutral: Adds calcium without changing soil pH, unlike lime
  • Aluminum Toxicity Reduction: Reduces aluminum and manganese toxicity by aiding in leaching
  • Improved Drainage: Enhances water infiltration and reduces surface crusting
  • Erosion Control: Reduces runoff and helps minimize soil erosion
  • Increased Earthworm Activity: Creates an environment conducive to beneficial soil organisms
DERIVED FROM

Mined Gypsum (Calcium Sulfate Dihydrate - CaSO₄·2H₂O)

Natural mineral gypsum containing approximately 23% calcium and 18% sulfur, mined from high-purity deposits and processed to agricultural specifications.

APPLICATION RATES & METHODS

Proper application of gypsum depends on soil type, crop requirements, and your specific agricultural goals. Always perform a soil test to determine exact needs.

🌱 Soil Amendment Applications

Soil Type Application Rate Purpose Frequency
Heavy Clay Soils 1-2 tons/acre (40-80 lbs/1000 sq ft) Improve structure & drainage Annual or biennial
Sodic Soils (High Sodium) 2-4 tons/acre (80-160 lbs/1000 sq ft) Sodium displacement As needed per soil test
Compacted Soils 1-1.5 tons/acre (40-60 lbs/1000 sq ft) Improve infiltration Annual
General Maintenance 0.5-1 ton/acre (20-40 lbs/1000 sq ft) Maintain soil quality Every 2-3 years

🌾 Crop-Specific Applications

Crop Type Application Rate Timing Special Notes
Peanuts 600-1000 lbs/acre At pegging Critical for pod development
Alfalfa 1-2 tons/acre Pre-plant or early spring High sulfur demand
Corn 200-500 lbs/acre Pre-plant Band or broadcast
Tomatoes 1000-1500 lbs/acre Pre-plant Prevents blossom end rot
Citrus 2-4 tons/acre Spring/Fall Improves fruit quality

🏡 Garden & Lawn Applications

Application Rate Method
Lawn (Clay Soil) 40 lbs/1000 sq ft Broadcast, water in
Vegetable Garden 2-4 lbs/100 sq ft Work into top 6 inches
Flower Beds 1-2 lbs/100 sq ft Top dress or incorporate
Potted Plants 1-2 tbsp/gallon of soil Mix into potting soil
Application Tips:
  • • Can be applied any time of year - no risk of burning
  • • Works best when incorporated but can be surface applied
  • • Water after application to activate
  • • Compatible with most fertilizers and amendments
  • • For sodic soils, may require multiple applications
GYPSUM CALCULATOR

Gypsum Application Calculator

Calculate the exact amount of gypsum needed for your specific application.

🌱 Soil Amendment Calculator

📋 For improving soil structure and drainage

🌾 Crop-Specific Calculator

📋 Calculate gypsum for specific crops

🔬 Calcium & Sulfur Calculator

📋 Calculate nutrients provided by gypsum application

🧂 Sodic Soil Reclamation

📋 Calculate gypsum needed based on soil test results

💰 Cost Calculator

📋 Calculate total cost for your gypsum application

Powered by Greenway Biotech, Inc. — Premium soil amendments since 1989

CONSTRUCTION & INDUSTRIAL USES

Construction Industry

  • Drywall & Plasterboard: Essential for producing fire-resistant, soundproof interior walls and ceilings
  • Mortar & Cement: Added to regulate setting times and improve workability
  • Gypsum Blocks & Panels: Lightweight, mold-resistant materials for interior partition walls

Industrial Applications

  • Paper Manufacturing: Used as a filler and coating agent to enhance paper strength
  • Textile Industry: Employed in sizing and finishing processes
  • Water Treatment: Aids in removing turbidity, heavy metals, and phosphates
  • Air Pollution Control: Used in flue gas desulfurization systems

Art & Crafts

  • Sculpture & Molding: Fine-grained texture ideal for artistic applications
  • Model Making: Perfect for architectural models and hobby crafts
GROW WITH CONFIDENCE

Our high-quality Gypsum is designed to give you peace of mind and exceptional results.

Product Quality Guaranteed
  • All our products are manufactured in California, USA
  • Tested by independent third-party laboratories for quality assurance
  • Registered with the California Department of Food and Agriculture (CDFA)
  • Rigorously tested to ensure products are free from heavy metals
Environmental Responsibility

We're committed to sustainable practices, including:

  • Responsibly mined from natural deposits
  • Minimal processing to reduce energy consumption
  • Helps reduce agricultural runoff and erosion
  • Improves water infiltration and conservation
  • Supports sustainable soil management practices
Hassle-Free Return Policy

If you're not completely satisfied, we offer a 30-day money-back guarantee. Simply return the unused portion in its original packaging, and we'll process a full refund.

Charitable Contributions

1% of all profits go to our foundation, focused on improving educational opportunities for children. Learn more at greenway.foundation.

CUSTOMER SUCCESS STORIES

"We've used this gypsum for a few seasons now, and it's made a world of difference in our clay-heavy soil. Water infiltration improved dramatically!"

— Sarah W., Vegetable Farmer

"Our citrus trees have never looked better! The gypsum helped with our alkaline soil issues without changing the pH. Fruit quality improved noticeably."

— Mark L., Citrus Grower

"After struggling with sodic soil for years, gypsum application finally gave us productive fields again. Worth every penny!"

— Johnson Farms

FREQUENTLY ASKED QUESTIONS

Click on each question to see the answer.

How often should I apply gypsum?

Typically once a year for maintenance or as recommended by a soil test. Heavy clay soils may benefit from annual applications, while sandy soils may only need gypsum every 2-3 years. For sodic soil reclamation, multiple applications may be needed based on the severity of sodium issues.

Will gypsum change my soil pH?

No, gypsum is pH neutral. Unlike lime (calcium carbonate), gypsum (calcium sulfate) adds calcium without raising soil pH. This makes it ideal when you need calcium but don't want to change pH, or for high-pH soils where lime would be detrimental.

Is gypsum safe for organic gardens?

Yes, mined gypsum is generally approved for use in organic farming. It's a natural mineral that doesn't contain synthetic additives. However, always verify with your specific certifying agency to ensure compliance with your organic certification requirements.

How quickly does gypsum work?

Gypsum begins working immediately upon application, but visible results vary. For improving water infiltration, you may see results within weeks. For sodic soil reclamation, it typically takes 3-6 months to see significant improvement. Full benefits for soil structure may take 1-2 years of regular application.

Can I apply gypsum with other fertilizers?

Yes, gypsum is compatible with most fertilizers and can be applied simultaneously. It won't react negatively with NPK fertilizers, organic amendments, or most pesticides. In fact, the calcium from gypsum can improve the uptake of other nutrients.

DISCOVER MORE GARDEN WISDOM
HAVE QUESTIONS?

Check out our Gypsum FAQ or contact our experts for personalized advice.

Call us: (562) 351-5168
Email: questions@greenwaybiotech.com

Greenway Biotech, Inc. | Est. 1989 | Making gardens and their humans healthier®

Premium soil amendments manufactured in California, USA

Customer Reviews

Based on 36 reviews
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(33)
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J
Jenenne

High quality clean product. I love it

W
William Graham
Gypsum

It was great, didn't have to wait long for delivery either!

T
Thomas Beidleman
So Far So Good !

Ordering, Shipping and ultimate delivery all executed without a problem.
Haven't used the product yet so can't comment on effectiveness.

I
Ibrain Ortega
The best

High quality, fast shipping. I'll buy again.

G
Gayle Edwards
Water soluble Calcium

The Gypsum was spread thin and worked into the garden soil as a sidedressing. Blossom rot vanished and the next set of veggies and fruits to ripen were scrumptious.