A green facade (or green wall, living wall) can be seen as a vertical garden. It uses plants that can climb up the wall with or without support from the bottom to the top. Another way to create a green facade is by using plants that will be set into containers at certain heights, evenly distributed throughout the surface.
They can be installed outside, but often also inside where they can help to provide a pleasant climate with cool, humid air.
There are endless possibilities of plants that can be used for the purpose of a green facade. It mostly depends on the specific goals you want to achieve when installing one of these walls. This can be shading, aesthetics, temperature or humidity, but more likely a combination of all four. Another aspect to keep in mind when choosing the right plants for your green facade is, that they will have different growing conditions such as lighting, temperature or soil.