wall

• 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:
    • nitrogener
    • accumulator
    • attractor
    • phreatophyte
    • phytominer

• 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

    • herb
      • cymbopogon
      • vetiver
      • imperata
      • symphytum
    • shurb
      • lantana
      • melastoma

  • facewall: every 0.5 m in zigzag or diagonal lines

    • austroeupatorium
    • eupatorium
    • ageratina
    • kalanchoe pinnata
    • stachytarpheta

  • footwall: every ~2 m

    • dwarf for coppice
      • gamal
      • kaliandra
      • lamtoro
      • dadap
      • sesbania
    • shrub for coppice
      • senna septemtrionalis
      • tithonia diversifolia
      • dahlia imperialis
      • boehmeria nivea

  • edge: every ~3 m

    • heartleave
    • debregeasia
    • trema
    • inga
    • vegy fern

• 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