a practical 'green wall'

I see so much hype over the 'living' / 'green' wall things and it makes me angry every time because 1) they're not green in the environmental sense because they use tons of energy with massive irrigation systems and they're often designed with plants that need constant replacement and 2) there is still plenty of empty urban horizontal space that needs to be filled and yes, even in NYC. But this site in Hells Kitchen is simple and gets better every year; a 2nd floor terrace with planters full of English Ivy, cascading down along a wire trellis system along the facade of the building.