The second wall is more complicated. First, we took the modules off from the wall, and we found the soils are very wet, especially the soils on the bottom of the wall. From the right picture, we can see how wet the living wall was.
Then we put the modules on the floor and clean them one by one. It was not very easy to wash those modules. Later we put soils back to those modules and planted new plants into modules.
All done! I learned about the ecosystem, planting design, and construction of living wall from this work.