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Gypsum contains calcium, sulfur bound to oxygen and water and can improve overall plant growth and can improve the physical properties of some soils, especially heavy clay soils. Gypsum has been shown to increase calcium availability and in some instances lower pH. This enhances deep rooting and the ability of plants to take up adequate supplies of water and nutrients. Gypsum is moderately soluble in water. Calcium moves very slowly from one plant part to another, and fruits at the end of the transport system get too little. Calcium must, therefore, be constantly available to the roots.

Gypsum Information PDF



Uses & Application

Typically applied at 5-10 pounds per 100 square feet of garden space or 1/2 cup per cubic foot of potting soil.


  • Environmentally friendly, non-toxic
  • Improves soil structure and drainage
  • Corrects mineral balance in the soil
  • Enhances root fertility
  • Will not “burn” plants or seedlings
  • Raises pH in acidic soils
  • Increases phosphorus availability
  • Improves the cation exchange capacity
  • Provides an excellent source of macro and micro nutrients
  • Increases moisture holding properties in the soil

Mineral Content

  • Calcium (Ca) ………………………….. 22.00%
  • Sulpher (S) ………………………………. 17.00%

Additional information

Weight N/A
Dimensions N/A

20 Pound Box, 30 Pound Box


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