Lewisboro lawns are green rooms cut out of oak woods and old field walls, not open fields, and they have to be mowed that way. Mike's Lawn and Landscape LLC works South Salem, Cross River, Goldens Bridge and Waccabuc — mowing around ledge and stone, trimming tight to the wall so the turf ends where it should, keeping the shaded side at a different height than the side that takes full sun. Fog off the Cross River Reservoir can sit in these hollows until nine on a June morning, which makes the start of a day a matter of reading the weather. When the oaks let go in November they bury a yard completely, and the cleanup is what hands the lawn back to the house. Fine work in a town that has always been half woods.