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How Green Walls Work Illustration by Jason Treat, National Geographic. Source: Patrick Blanc Many living wall systems also have built-in irrigation systems in which water is harvested at the bottom of the wall and recirculated back to the top, as seen above. The types of plants on green walls differ, but can include grasses, vines, and other climbing plants—all of which must have strong root structures, Green Roofs for Healthy Cities' Paul Erlichman said.

A most gorgeous sculptural hydroponic garden by R&Sie Architects entitled ‘Lost in Paris‘ which consists of 300 glass-blown pods to feed 1200 ferns that cover the house regulating the indoor temperature.