Green Wall Design Ideas

Inspired by images of stacked timber logs, here is what I have in mind for the green wall in the healing garden at the moment.

Here are some of my previous design idea sketches:

Idea #1 - Vertical green wall panels system

However, panel system requires built-in irrigation system, which may have high installation cost. Also, only low-profile plants can grow on such system, limiting variety of plant species.

Idea#2 - Pots in wire space-frame

Another type of green wall is stacking of horizontally placed planters, which allows plants to grow vertical, not limiting the height of growth. This also allows individualisation of pot designs. 

Idea #3 - Curved structure with climbers and planters
This loosens the rigidity of a rectilinear design by introducing curvilinear lines.