32pp.

Basic understanding of and approaches to soil health. Soil fertility, Earthworms, Cover Cropping, Getting the Most out of Your Compost Pile, the Art and Science of Sheet Mulching, Rhizosphere Wars: Tree & Soil Health, Keyline Planning for Soil Improvement, Very Intensive Beds, Silt as a Resource, Roof Gardens Using Leaves, Soil Pesticide Detox.