Green House Taken Too Literally?

So this house has been a project under-works for approximately 8 years and as a result has become an almost entirely "green" clad building.

To me this raises the question of what really is to be considered "green" architecture, as when one first looks at this all you are able to synthesize about the house is that it is plant material and windows, which really challenges the notion of how we consider the exterior skin of buildings. Typically, when a green wall is incorporated into a facade it is just that- one wall, not the entirety of a facade with the exception of windows.

http://www.inhabitat.com/2010/03/30/gorgeous-green-house-wrapped-in-a-vertical-garden/