Middlefield in late August smells like apples and cut grass at the same time — the orchard rows up off Route 157 going heavy while the lawns below still want their weekly pass. Allen Lawncare LLC works that stretch of Middlesex hill country, mowing, trimming, edging and handling the cleanups at either end of the growing months. There is a particular satisfaction in laying the last stripe of a yard dead straight against a crooked old stone wall. The work is easy to name and hard to do right: even height, clean lines, nothing left behind but the smell of it. Middlefield yards are small enough to know by heart, and that is how they get treated.