I live in Sydney, 8 acres, environmental protected, adjacent to The Blue Mountains National Park. Soil is either crushed sandstone or pure clay. Both are lifeless. Starting a vegi garden. Have access to heaps of spent coffee grounds, horse dun and nothing much else. Have 2 big work farms. None of your technical knowledge. Am experimenting with clearing the dead wood with biocharing them. Mulching the undergroth to enable grasses and to allow the gum trees to grow, without bushfires. Would value any advice.