Keeping plants packed full of nutrients is vitally important when they are used as a good portion of your tortoises diet. Soils have only a certain amount of life before the natural nutrients are used up by the rapidly growing plants. Adding nutrients back in but also  keeping the plants chemical free is how we should all be aiming to grow fresh foods. This fertiliser is 100% organic and will not add any unnecessary chemicals to the plants. It is guaranteed seed free also so won't add unwanted potentially dangerous plants. 100g will cover approximately 1 metre square. Mix well through the soil, add seeds/plants and water well. For already established gardens, sprinkle all around the plants and water well.