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