Vitax Organic Potato Fertiliser 1kg 100% organic natural goodness. A carefully balanced organic fertiliser formulated for sustained growth of seed potatoes. This will help the increase of your potato harvest. Suitable for use with potato barrels and other planters. Also recommended for other vegetable crops. Organic fertiliser gives a flow release of nutrients, sufficient for a whole season. Encourage a bumper crop of fleshy potatoes with this carefully balanced organic fertiliser. Formulated to promote sustained growth of potato tubers, it will also boost growth and yield of other root crops. Contains nitrogen, 2.5% phosphorus pentoxide and 8% potassium oxide. Simply apply as a top dressing at the time of planting. Suitable for use with potato barrels and other planters.