Product Description Westland Cacti and Succulent Potting Compost Mix contains just the right level of nutrients with added grit and sand for excelent drainage. This free draining mix encourages optimum root development vital to the successful cultivation of all cacti and succlent plants. This product also contains SERAMIS clay granules that work by absorbing water and releasing it back to the plant when needed for optimum water and nutrient avalibility. Finally, this product also contains grit and sand that provide optimum drainage enabling good stong root developement resulting in a all round healthier plant. This is a specialist blend that can be used by anybody who wants a strong and healthier plant that is provided with optimum water and nutrient availability. The added SERAMIS granuals do a fantastic job at regulating the plants water intake to ensure optimum water and nutrient availability. The added grit and sand found in this mix provide your plant with optimum drainage so roots can develop well resulting in a healthier plant. This 4L bag will fill a 14cm pot.