If your soil is heavy, suffocates roots, or retains excess water, volcanic rock is an excellent choice to improve the planting environment. It features high porosity that helps aerate the root zone and improve drainage of excess water, while retaining an appropriate amount of moisture within the growing medium. Suitable for mixing with soil, peat moss, compost, and potting soil. Used for indoor plants, trees, succulents, ornamentals, hydroponic beds, and nurseries. A natural and practical product that gives the soil better structure and helps plants grow in a more balanced environment.