March arrives in Troy as gray water — the last plow piles slumping at the ends of the driveways, the Red Run running high and brown behind the subdivisions. RNS Landscaping Solutions likes that stretch of the calendar, because it is when a yard is decided. Rake it open, edge it clean, and by May the clay is holding a green that carries all summer. Warm months mean mowing on schedule, trimming, edging, and cleanups at both ends of the year; cold months mean plowing, shoveling the walks, and salting the ice that forms and re-forms every time the thermometer crosses back over freezing. This town was laid out on a square-mile grid and it still shows in the long straight run of Crooks and Rochester, one tidy parcel after another — and there is real satisfaction in keeping a few of them sharp.