Azomite Rock Dust
Azomite Rock Dust Azomite Rock Dust Azomite Rock Dust
$ 24.95

This non-toxic mineral can be helpful to humans, animals, plant life and the environment.  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 is the result of ancient sea life calciferous remains and sulfuric water conditions.  Gypsum is an abundant mineral found in over 85 countries.  Application of mined gypsum to agricultural soils has and long history.  Gypsum is also used to manufacture a variety of products.

Gypsum can sometimes be especially helpful in areas that were predominately grassland or for adding sulfur due to crop demands.  Sulfur is especially important for quality factors such as sugar content and flavors in food.  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 during drought periods.

Gypsum is moderately soluble in water.  This makes the calcium in gypsum more mobile than the calcium in lime and allows it to more easily move through the soil profile.  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.  Additions to soil of a good source of calcium, such as gypsum, can improve the quality of horticultural crops.

How to use Glacial Rock Dust

Gypsum is typically applied at 5-10 pounds per 100 square feet of garden space or 1/3 cup per cubic foot of potting soil.

Technical Details/Features

  • 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%
  • Sulphur (S) …………………………………….….. 17.00%