Early on a summer morning the Cass River lets go of its fog slowly, and the lawns of Bridgeport Charter Township hold their dew until the sun clears the treeline. Frye's lawn service starts about then, mowing, trimming and edging yards through the flat green heart of the Saginaw Valley. The ground here grows things enthusiastically — grass very much included — so the work is a weekly conversation rather than an occasional visit. A cut done right shows up in the small places: the clean seam where turf meets sidewalk, the strip along the fence nobody usually bothers with. It is a good way to spend a valley morning.