Polysulphate®

All nutrients are in sulfate form.

Polysulphate is produced from a natural mineral called polyhalite, which is an evaporite mineral, a hydrated sulfate of sulfur, potassium, calcium and magnesium.

It is mined from the Polyhalite layer of rock, over 1000m below the North Sea, off the North Yorkshire coast in the UK. Polyhalite and undergoes a simple process of crushing and screening the rock and is then marketed as Polysulphate.

Polysulphate is available in its natural form. Preparing it for the market as Polysulphate involves no chemical separation or other industrial processes – it’s completely natural, organic and sustainable. Polysulphate has been approved by many global and national bodies for organic use.

Polysulphate dissolves steadily in the soil solution, thus having all nutrients available for plant uptake during the growth period. Being a natural crystal, it has a unique dissolution pattern, which releases its nutrients gradually after being applied to the soil. The prolonged release characteristic of Polysulphate means that as the four nutrients it contains are released, and they provide a continuing continuous, fresh source to the growing crop. This pattern matches the uptake timing of nutrients by the crops and minimizes the risk of loss of sulfate by leaching.