Urban Worm BiocharAdd intense microbe and nutrient storage capacity to your soil. Urban Worm Biochar is produced in Maine from wood waste through a high temperature, low oxygen process called pyrolysis. The result is a 97% carbon product with massive, positively charged surface area to provide an extremely dense habitat for microbes and high cation exchange capacity (CEC)) for your soil. Pair this with our microbe rich, organic Urban Worm Castings to inoculate the