Lookout Creek winds the whole length of the valley past Trenton, threading between hayfields and back pastures with the mountains standing over both. Greg's Lawn & Exterior Services keeps the lawns along that run cut, edged and trimmed, taking the outside of a place from shaggy to squared away. September is a fine month for it — the heat easing off, the light going amber by five, the grass slowing just enough to hold a good cut for longer. Every yard finishes the same way: trimmer around the posts and foundation, blower across the drive, nothing left behind but the smell of it. Then the leaves come, and clearing them off is the last favor you do a lawn before winter.