Interesting that "naturalistic" planting seems to have become the default aesthetic in urban planning. Case in point I was walking through London's new 'Embassy Quarter'. A large industrial area that stretched from Vauxhall Bridge to Battersea has been erased to create a different kind of concrete jungle. The blocks and towers are interspersed with landscaped sections and large herbaceous borders. 

 NB the edifice in the background which looks like a multi-storey car park is in fact the American Embassy. Along one perimeter of the building there is a good example of how to combine naturalistic planting with a bleak and dystopian vision of the future.