Certified Asbestos Free. Therm-O-Rock Horticultural Vermiculite provides superb aeration and moisture retention when mixed in with peat, bark or compost. Helps support robust root structure and stimulates fast root growth. Can be used by itself as a soilless growing media. OMRI Listed for use in organic production.
• Certified asbestos free
• Helps soil retain moisture and nutrients
• Will NOT rot or deteriorate
• #3 medium (all-purpose) grade
• Improves soil aeration in garden beds
This lightweight and absorbent soil amendment holds more water than perlite or pumice. It is a natural mineral (similar to mica) that expands when heated to a high temperature.