Organic Polyhalite Fertiliser. Fine Powder. Mined in Yorkshire 14% Potassium Oxide

Derived from a Quarry in Yorkshire, UK. It is a good source of potassium, magnesium, calcium and sulphur. Water soluble fine powder. Recommend by the Daily Telegraph and used at Wimbledon.  

Directions for use:

Soil Mix 2.5g - 5g per litre of soil

Top Dressing 1 - 3g per litre of soil. 

Outdoor 50 – 125g per metre squared. Every 6 – 12 weeks during growing season