The city is a structured place. Roads and sidewalks follow mainly straight lines, while houses, apartment buildings, offices and shops march dutifully alongside them, one after the other. Many of us live structured lives within our concrete, highly controlled world, following the schedules, routines, and norms of our workplaces and leisure activities. Urban green space is often no different -- processions of trees stand on manicured turf and garden beds are filled with neat lines of annuals. Community use of park space is defined and limited by a stifling array of municipal policies, bylaws, permits and red tape.