Chempak No.8 Low Nitrogen Soluble Liquid NPK Feed Fertiliser for Mature Plants, 750g. This is an ideal feed for established plants and promotes firm growth. It can be used to make up to 1500 Litres of feed. The fertiliser is an EC fertiliser with an NPK blend of 12.5-25-25, including essential micro-nutrients. This feed is used by professionals and leading growers to produce plants of the highest standard. Suitable for a variety of plants including alpines, delphiniums, sweet peas, bonsai, heathers, onions, cacti, lawns, leeks, conifers, orchids, and runner beans. It has a lower nitrogen content but offers extra phosphate and potash, which matures growth and encourages a firm ripe finish. Fully soluble, it works instantly. Supplied as a 750g pack. Instructions for use: Dissolve 2 level measures of crystals in 5 litres of water and apply to plants every 7 to 10 days, ensuring the soil or compost is well moistened. For more frequent use, dissolve 1 level measure in 10 litres of water and apply at every watering. At this strength, the pack makes over 1,600 litres of plant food.