Greensand is an iron potassium silicate containing 7 percent potassium (K2O), 20 percent iron oxide (FeO2), and as many as thirty (30) other elements. Greensand loosens hard soils, binds sandy soils, regulates moisture, and assists in the release of other nutrients. This ancient algae sea shore deposit is valued as a slow release source of potash and other essential minerals. Greensand can be mixed with Gaia Green Glacial Rock Dust to produce a broader range of nutrients. 3kg
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