An organic based granular fertiliser with a high potash formula (in the form of Sulphate of Potash to promote superior flavour & colour), plus added Magnesium which is ideally suited to the needs of both potatoes & fruit crops. The granules ensure a slow release effect which will result in higher quality crops. N-P-K 7-5-12. 5kg. Note: Please order fertiliser with your potatoes as they will be packed & sent together.