Gaia Green Glacial Rock Dust is high in natural silica and provides an excellent source of calcium, iron, magnesium and potassium, and trace elements and micronutrients. It can also increase moisture-holding properties in the soil, improve the cation exchange capacity, and improve soil structure and drainage.
*NPK is subject to change with each batch as the product is entirely organic.
Greensand is an iron potassium silicate containing 7% potassium (K2O), 20% iron oxide (FeO2), and as many as thirty (30) other ele..
$32.99