Otisfield spreads out along Route 121 in long fields and slow rises, the kind of ground that asks for a wide pass and some patience. Aarons Tractor Services works those open lawns and field edges here, mowing them down to an even nap and cutting a clean trim line where grass meets stone wall. Summer mornings come in warm off the hayfields, and by the time the dew burns off there are straight lines running the whole length of a yard. Trimming, edging and seasonal cleanups keep the shape of a place from going soft at the corners. It is plain work with a visible result: a lawn that looks cared for from the road.