The old field walls above Pocantico Hills still run through the woods in low grey lines, and the lawns of Mount Pleasant are laid out around that same stubborn stone. Covert Lawns mows the yards where the mower has to yield to a wall, a stray outcrop, a slope that drops faster than it looks from the road. Midsummer is the heart of it — cutting early, before the heat stands still, and leaving each property looking rested rather than worked over. The detail that matters is the finish: a clean line where grass meets stone, trimmed corners, a drive with nothing scattered on it. Spring and fall cleanups keep the rest of the calendar honest, opening the season and putting it away again.