Glacial Rock Dust
A natural mineral product in a form readily used by soil microbes to create healthy soil. High in natural silica and provides an excellent source of calcium, iron, magnesium, potassium, trace elements and micronutrients. Also increases moisture holding properties and cation exchange capacity. A superb natural product for all horticultural purposes. Application rate: up to 10kg (22 lbs) per 10 square meters (100 sq. ft.). 2kg.