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Black Grit is a fused calcium magnesium silicate phosphate soil amendment/fertilizer.
The product provides low fertility acid soils where it increases pH and CEC and provides and helps unlock P in the soil.
Firstly, provides soil amendment and fertilizer together in ONE application to acid soils.
Secondly, assists in increasing ph to a sustainable level.
Therefore, providing useful amounts of macroelements Ca, Mg, Si and P as well as a range of micronutrients.
It is not water-soluble therefore does not leach or wash away.
The grit is made from naturally occurring minerals not chemically treated.
Grit works with the natural soil chemistry to digest soil acid as well as provide minerals in a plant-available form.
It is high in plant available calcium (24%), magnesium (10%) silicon (11%), and phosphorus (8%).
It has taken decades in some cases for soils to deteriorate and change also takes some time, but the sooner the product is applied the sooner it can get to work in the soil.
Typically, within 24 hours of application with some moisture Black Grit will start to digest soil acid and provide macronutrients to the plant.
Simply sprinkle 40g p/m2 around the garden and water in.
1kg of Black Grit will treat up to 20m2 garden.
Apply Black Grit every 3-6 months