Below the city the river goes down into the gorge and stops being scenery; it becomes weather, throwing cold air and spray up over the rim at the Whirlpool until a September morning feels a month later than it is. Work done in that air has to be deliberate. Niagara Lawn Guru mows, trims and edges on a schedule the grass sets rather than the calendar, reading how fast a lawn is running and cutting it to suit. The payoff is the plain geometry of a finished yard: parallel lines across the open turf, one bright hard edge where the lawn meets the driveway, nothing ragged left along the fence. Some of the oldest satisfactions are also the simplest ones.