Ferti Sulf Bag 25Kg is a soil amendment that is used to improve the fertility of soil by providing essential nutrients for plant growth. It is a mixture of sulfates and sulfides of potassium, phosphorus and sulfur. It helps to increase the water holding capacity of soil and reduce soil compaction. Additionally, it helps to reduce soil pH and promote microbial activity in the soil. It can be applied to both lawns and garden beds to ensure optimum plant growth.