Potash fertiliser is produced by mining potassium salts from underground deposits. The word “potash” comes from the early method of producing potassium salts by leaching the ashes of wood and other plant material. The ashes were then boiled in a pot, which caused the potassium salts to precipitate. The precipitate was then collected and dried, and it was called “potash”.
 
Modern day Potash mining is a complex process that involves a number of steps. First, the potash ore is mined from underground deposits. The ore is then crushed and ground into a powder. The powder is then dissolved in water and the potash is extracted using a variety of chemical processes. The potash is then dried and packaged for sale.
 
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