Welcome to a Gardening with Biochar FAQ!
... a work in progress...
When gardeners add biochar to garden soil, we are, in effect attempting to follow in the footsteps of the originators of Terra Preta. Because we don't know exactly how that process worked, nor how we can best adapt it outside its area of origin, we are left to discover much of this by experimenting with our own gardens and comparing observations within our own communities.
Phillip Small described how he uses an inverted downdraft gasifier inspired by Tom Reed and Ray Garlington to make charcoal for soil fertility experiments.
