Fieldstone walls still run through the back lots of Harrison, the old property lines of a town that traded its pasture for shade trees. MP Masonry & Landscaping LLC. works both halves of the year along them — mowing, trimming, mulching and bed care while the grass is running, then plowing, shoveling and salting once the pavement goes hard. Summer asks for patience with a hedge line; winter asks for someone awake at three in the morning. The pleasure turns out to be the same in either season: a lawn edged to a crisp line, a driveway opened all the way to the road.