Dolomite and limestone deposits were originally seabed’s where sea creatures such as snails, clams, corals, sea urchins, fish, and others lived and died millions of years ago. Their remains slowly built up layers of sediment thousands of feet thick, these sediments are the dolomite and limestone formations that are mined today.
Dolomite is pulverised into fine particles the finer the particles the greater the surface area and quicker it breaks down in the soil.
Dolomite is a natural source of calcium and magnesium carbonate, the primary reasons for adding these elements to the soil is to raise the pH of acid soils and prevent calcium and magnesium deficiency in soil, plants and animals. The presence of calcium and magnesium in acidic soils improves structure and the availability and uptake of major plant nutrients like nitrogen, phosphorus, and potassium.
Garden: Heavy clay soils – 500 grams per square metre
Lighter soils – 200 grams per square metre
Note: Avoid applying dolomite around acid-loving plants such as azaleas, camellias, rhododendrons and citrus.