At a property I am co-managing, there is an outhouse that is basically a roof, three walls and a door around a toilet seat on a stand on top of a 1 meter long .5 meter wide concrete tube vertically submerged in the ground. The tube is full of human waste, mostly liquid. It doesn’t drain into the ground because the subsoil is heavy clay. What trees could I plant around the outhouse that would reach roots in under the concrete tube and suck out the material, including liquid? Would willow work? Poplar, birch? Would comfrey do anything? How would I go about retrofitting such a situation into a treebog?
Earthworks are the skeleton; the plants and animals flesh out the design.
Here’s good advice for practice: go into partnership with nature; she does more than half the work and asks none of the fee. – Martin H. Fischer