The High Potash Formula Delivers Amazing Results. Its A Soluble Plant Food Thats Specially Formulated To Improve The Quality & Quantity Of Your Flowers In Both Containers & Beds & Is Ideal For Bedding Plants, Herbaceous Perennials & Flowering Shrubs. In Trials, Nutri Flower Booster Has Proven To Double The Results Of Plants That Have Not Had Any Feed.one 800g Tub Will Deliver 80 Gallons/ 360ltrs Of Feed For Your Flowering Plants & Can Also Be Used On Fruit & Vegetables. N:p:k: 12.5:5:25 + Many Trace Elements.