Late in the day Lake Capri goes flat and silver, and the lawns that run down toward it hold the last light longer than anything else in the neighborhood. Conyers Lawn Pros works those evening hours through summer — mowing, edging along walks and drives, trimming close to dock posts and fence lines, blowing the clippings back off the concrete. Rockdale grass asks for a weekly rhythm from April to October, and keeping that rhythm is most of the job. There is a quiet pride in pulling away from a yard with nothing left to notice but green. Next week it begins again, which suits them fine.