At this point, grass cutting is a luxury. When Detroit closes off large areas of the city [[as recently proposed by Bing), I doubt if they will be mowing the grass in those areas. So why not start now? We can call them "grasslands", or "marshlands", or "nature/wildlife refuges", etc.

If people in Detroit really want the grass cut, maybe they can volunteer their time to do it themselves. It would be a lot cheaper than paying someone.