Our premium-grade vermiculite has been refined to offer your plants the ideal growing environment. It has outstanding water retention qualities. Vermiculite enhances soil drainage, aeration, and moisture retention when mixed with soil. Easy to use right out of the package. SOIL AERATION - Vermiculite is an excellent tool for enhancing soil by forming air channels which allow water and air to circulate more easily through the soil. This encourages strong and more vigorous root growth PROMOTE VIGOROUS GROWTH - Helps retain nutrients such as potassium, calcium, and magnesium. Which acts as a natural conditioner. EASY TO USE - Light and simple to mix into soil and can be used as a growing medium.