Fast Acting Gypsum
Best soil amendment for gardeners struggling with heavy clay or compaction.
Revitalize your soil with Earth Science Fast Acting Gypsum. This 25 lb bag amends up to 5,000 sq. ft., effectively breaking down heavy clay and compacted soils. It repairs damage from winter salt and pet spots, improving aeration and water penetration for healthier plant growth. Utilizing patented Nutri-Bond Technology, it enhances nutrient retention and reduces runoff. Made from environmentally friendly Flue Gas Desulfurized Gypsum, a single application provides season-long benefits. Ideal for lawns, gardens, and ornamental plants, it's a fast-acting solution for improved soil structure and plant vitality.
$24.89
Owner Satisfaction
4.6
/ 5
Category Rank
1941
/ 4449
#1941 in Fertilizers
Price vs Category Average
-60%
Below average
Weight
25
/ lbs
Who it's for
- Botanists maintaining specific pH levels for acid-loving plants
- Gardeners needing immediate results for compacted clay soil
- Homeowners struggling with poor drainage and water runoff
Who should skip it
- Budget-conscious gardeners seeking the most affordable soil amendment
- Landscapers working with already loose or sandy soil types
- Growers looking for an all-in-one complete plant fertilizer
Performance breakdown
Soil Amendment Efficiency
Rapidly breaks down dense clay for noticeably improved soil structure.
Coverage Density
One bag efficiently treats a generous 5,000 square foot area.
Nutrient Retention
Nutri-Bond technology effectively minimizes runoff and locks in essential minerals.
Application Versatility
Safe and effective for lawns, ornamental plants, and vegetable gardens.
Damage Repair
Quickly neutralizes salt damage and restores vitality to pet-stressed spots.
Formula Longevity
Provides consistent season-long benefits with just a single annual application.
Key Specs
Weight
25 lbs
Coverage
5,000 sq. ft.
Form
Granular
Fertilizer Source
Mineral Based
Season of Application
Spring, Fall
Duration of Effectiveness
12 months
Container Weight
25 lbs
Water Soluble
False
Features
- Repairs clay and compacted soils
- Fixes winter salt and dog spot damage
- Nutri-Bond Technology for nutrient retention
- Season-long benefits from one application
- Fast-acting formula for immediate results
- Improves water penetration and aeration
- Enhances root development
- Provides essential calcium and sulfur
What customers say
Customers consistently highlight the impressive speed and effectiveness of this gypsum. Reviewers note significant improvements in soil drainage and plant vitality much faster than expected, often seeing results within weeks. The granular formulation earns high marks for its ease of application, making soil conditioning a simple task for both novice and experienced gardeners. While priced slightly higher than standard options, the rapid, reliable results firmly establish its strong value proposition.
Know before you buy
While lime is used to raise soil pH, gypsum is a neutral soil amendment that does not significantly change pH. It is specifically designed to improve soil structure by breaking up heavy clay and providing essential calcium and sulfur.
This product is safe and effective for both lawns and gardens. It is suitable for vegetables, trees, and shrubs, helping to improve soil aeration and water penetration for better root development across all these plant types.
Earth Science Fast Acting Gypsum is formulated for quick release, meaning it begins working immediately upon application. You can expect season-long benefits from a single treatment, with the effects lasting up to 12 months.
Yes, this gypsum is specifically formulated to help repair damage from pet spots and winter salt. It works by flushing out excess salts and improving the soil environment to encourage grass recovery.
While the product is not water-soluble, watering it in after application helps the granules settle into the soil profile more effectively. This ensures the nutrients reach the root zone where they are needed most.
Nutri-Bond Technology is a patented feature that helps the soil hold onto nutrients more effectively. By reducing nutrient runoff, it ensures that your plants get the maximum benefit from the minerals provided.
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$25