Field Grade Azomite mimics a coarse sand. Particle size ranges from 1/8" to powder. Field Grade is designed for composting and potting and can be dusty when broadcast. Azomite is a uniquely natural material mined in Central Utah.

For over seventy years, crop producers have used Azomite to support plant growth and vitality. Azomite requires no mixing. It is virtually odorless, will not burn plants, and will not restrict aeration or water penetration.

Mineralogically, Azomite can be described as a rhyolitic tuff breccia, which is a hard rock formation that formed from the dust of a volcano. The deposit resulted from the volcanic ash merging with seawater to form a mineral composition completely unique to its location and circumstance.

100% naturally derived and is completely free of additives, synthetics, or fillers. OMRI approved for organic use.