This plant-derived amendment improves the health of your soil by absorbing harmful impurities and increasing its ability to hold nutrients and water. Biochar does not break down and will continue to increase plant health and fruit and vegetable yield, season after season. Happy Cat Biochar is composed of charred natural oak waste and is non-toxic. Boosts soil health by absorbing harmful impurities and increasing its ability to hold nutrients and water. Promotes healthy plant growth and high yields of fruits and vegetables. Long-lasting and easy to apply-just mix into existing soil. 12 oz. Produced on a small Pennsylvania farm by Tim and Amy Mountz.