Obtained from hooves & horns which release nutrients 4-6 weeks after application. It then continues to release nutrients very slowly over a period of 8-10 months. This is a high nitrogen feed for plants that produce large amounts of leaves. Ideal for leafy vegetables, corn & slow-growing crops. Applied to fertilisation of cabbage, lettuce, rhubarb, courgettes & many more. The application is prior to transplanting will help new roots development making it ideal for trees & shrubs. Also greens & helps to overwinter of your lawn. 3.5kg.