April fog sits on the Acushnet until midmorning, and when it lifts the swing bridge and the far New Bedford waterfront come back one piece at a time. New England Tree & Landscape Inc. starts its year in that damp — spring cleanups, the first cuts of the season, edges reset along drives and walks, trimming where winter pushed everything out of line. Through summer it is mowing on a dependable rhythm; through fall it is leaves off the lawns beneath Fairhaven's big old shade trees. Then the wind swings northeast and the work becomes plowing, shoveling and salting driveways, lots and walkways between storms rolling up off the sound. One property, one crew, the full turn of the calendar.