Posted: Mon Mar 20, 2017 10:37 am
by Erik Danielsen
I suppose they could use species well suited to great exposure and minimal soil, like cedars, to at least get the visual concept executed without having to deal with the structural issues associated with deeper soils and more vigorous growers. Like a manmade cliff habitat.

That said, I'd agree with the notion that the environmental costs of building such a project would likely outweigh any potential benefit. Smarter would be increasing the number of tree-covered urban park spaces and taking better care of the trees in the ones that exist. The costs of building the project are likely to play a role in the drive to build it, honestly- at least if these other cities operate similarly to NYC, where the construction industry is a big player in calling the shots to encourage continuous development. Any concept that results in contracts is a concept they're willing to sell.