This living wall clearly expresses the depth required for the soil — what looks to be about six inches — in the way the U-shaped configuration of panels is expressed in front of the corrugated siding. Generally the panels that are used for living walls feature smaller trays with angled openings that give the plantings some verticality. To to put it another way, the plants don't cantilever horizontally from the panel, they reach up and out from the angled trays. Here, the wrapping of the window is a nice touch.
Also love the river sones around the base of the tree