Volcanic Pumice is screened for uniformity (1/4″-3/8″) and will improve drainage and aeration in ALL potting mixes, soils and hydroponics. Formed from molten lava, it is heavier than perlite and will NOT float to the top of your pots when watered.
• Lightweight, natural soil amendment
• Provides great aeration and helps anchor plant roots
• pH neutral
• Free of diseases, weed seeds and insects
• Will NOT break down over time
• Grade: Medium
Available in 1 cubic foot bags.
Add to your favorite growing mix or potting soil to make a lightweight, well-drained medium for containers.