Map the wall before choosing species
A single facade can have shaded, exposed and rain-sheltered zones. Photograph the wall at different times, note reflected heat from glass or paving and identify areas hit by wind-driven rain. The plant palette should follow these microclimates rather than a single label such as full sun or shade.
Match roots to the module
Vertical garden modules limit growing-media volume. Plants with aggressive roots, large mature size or high water demand may perform well briefly and then become difficult to manage. Check mature habit, root behaviour and pruning response against the selected system.
Design irrigation zones around exposure
Upper rows and exposed corners often dry faster than shaded lower areas. Divide irrigation into zones that can be adjusted, flushed and isolated. Filters and pressure control need accessible locations, and the drainage route below the wall should be visible during commissioning.
Plan for replacement
Even a healthy wall needs plant replacement. Keep a short list of compatible substitute species and agree who holds replacements. A modular system helps only when maintenance staff can reach each area safely and remove modules without damaging neighbouring plants.
- Group plants with similar water demand.
- Avoid species that quickly cover irrigation emitters.
- Use repetition so local replacements do not break the design.
- Allow safe access to the full height of the wall.
