earthworm on a permaculture fertile soil with shredded wood

agriculture backyard bed biodegradation biomass bois botany chiquetacopy compost compostable composting covered dacopy dirt earthworm farm fertile fertility fertilization fertilizer forest garden gardening ground growing growth gume horticulture hugel hugelkultur jardin jardiner lacopy land longterm mix organic permaculture plant potager preparing printemps rich rotten shredded soil sol spring terre vegetable wood worm