September is the underrated month here: nights cool off, the rain comes back, and Burton lawns green up again after the tired stretch of August. Pennell's Lawn Maintenance L.L.C. keeps mowing straight through that second wind, trimming the borders while the grass makes one last push before frost. A lot of the city sits on flat, open ground where a lawn is the front of the house as much as the porch is. Cutting it evenly, week after week, is not dramatic work, and it is the difference between a yard and a lawn. By the time the maples turn, the season's last cut leaves something clean to look at all the way to snow.