More stories of vertical gardens

Portland Oregon will be getting a new Federal building complete with exterior 250ft shade 'fins.' These fins are trellis's that will have some sort of plant material growing on them - planted at various heights - not just ground level. Although the rendering looks quite nice I am very curious to see how this will all pan out. This is a really great idea but planting in containers at various heights, facing west will be sure to create water and growth issues. I wonder what sort of plant material they are thinking...vines? evergreen? deciduous? Ground planting is the best solution for longevity - unless you are an epiphyte and that wouldn't work here. Seems everyone has a living wall or a vertical wall proposal but I'd be interested to see these ideas upon completion and then 6 months after when everything is dead.

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