layer for productivity
vertical or semi vertical slopes used for supporting species
the idea is to put everything needed for supporting beds on the wall
goals
utilize vertical or semi-vertical slopes and wall structures to host support species
maximize flat surface area of beds for high-value or productive species
integrate species that fulfill key regenerative functions:
selection criteria for wall species
fast-growing biomass producers
aggressive rooting for erosion control
tolerate shallow soil or rock wall crevices
easy to propagate: cuttings or seeds
multi-role functionality
tolerates pruning or coppicing
species used for walls in edem
crown: every 0.5-0.8 m - herb + herb + shrub + herb + herb
facewall: every 0.5 m in zigzag or diagonal lines
footwall: every ~2 m
edge: every ~3 m
key advantages
reduced competition for resources in productive beds
vertical surfaces become extremely functional ecological zones
species offer secondary outputs: medicine, fodder, mulch, flowers
enable structured pruning cycles for biomass or compost input