Fast Acting Gypsum®

Earth Science Fast Acting Gypsum® starts working immediately to loosen clay and other compact soils, creating a better environment for plants to thrive. The result is improved water penetration, more workable soil, and better root development.

Fast Acting Gypsum®

25 lbs – 5,000 Sq. Ft. Coverage

Product Details

Featured Technology


Helps Reduce Nutrient Run-off and Waste

Earth Science’s patented Nutri-Bond Technology™ bonds with the soil to help keep more product where you put it. That’s better for the environment and helps your lawn or garden get the most out of every application.

As a result of Nutri-Bond, 1 bag of Earth Science Fast Acting Gypsum® does the work of up to 4 bags of regular gypsum.

Nutri-Bond Technology™ chevron

Additional Features

Easy Application

Apply quickly with any spreader.

Lawn Food
Safe for Grass

Safe to use on any grass type.

People & Pets

People and pets can use the lawn immediately after application.


5,000 Sq. Ft.

Available Sizes

2.5lbs, 25 lbs

Step 1


Apply with Any Spreader

Apply at a rate of 5 lbs per 1,000 Sq. Ft. One bag of Earth Science Fast Acting Gypsum® will cover a 5,000 Sq. Ft. lawn. Apply any time of year.

Step 2


Water In (Optional)

While not required, watering for 15 minutes after application activates the product for faster results.

Application Rates

Rate & Frequency


25 lbs per 5,000 Sq. Ft. (1 bag), Up to 2x per season

Vegetable & Flower Gardens

1 lb per 100 Sq. Ft., Feed in Spring


1 cup around base, Feed in Spring and Fall

Spreader Type

Recommended Setting

Scotts Broadcast Spreaders


Scotts Drop Spreaders


Earthway Broadcast Spreaders


Lesco Commercial Plus


  • Apply any time of year to any soil type to loosen compact soils.
  • Excellent source of calcium and sulphur.

Expert Advice

Turns out, if you do something for 20 years, you have some advice to share.