PermaMatrix BSP (Biotic Soil Particles) Foundation mimics the slow process of the earth’s method for producing healthy soil. A carbon based soil builder containing biochar, mineral, and living micro-biological elements. It aids in the regeneration of your soil by kick-starting the biological processes required for healthy and sustainable plant growth. Apply per 1 gallon plant-2 tsp, per 5 gallon plant-2 TBS, and per cubic foot of soil mix-1.5 oz. Made in USA. OMRI Listed.