Galleries Gardening Tools and materials Biochar from above Biochar from above Biochar made from herbs using pyrolysis that can be used as a soil amendment and to make Terra Preta. License License this image from Stocksy Keywords biochar biomass black carbon carbon capture charcoal fine-grained herb high-carbon Indoors pellets pyccs pyrogenic carbon pyrolysis residue soil amendment thermal decomposition More from this shoot Biochar Biochar Biochar Pile of biochar Pile of biochar