Every May, Highland Park turns violet and the whole city walks uphill to smell it. Highland Services Now works the streets around that slope and well beyond — mowing, edging, trimming, and hauling off the clippings and leaves so a yard reads as cared for. A lawn cut short and even is its own kind of bloom; it makes the porch look wider and the hedge look deliberate. The best hour is the one right after a cut, when the smell still hangs in the air and the lines are sharp. Homes in Brighton, Pittsford and the South Wedge get the same attention as the ones a block from the pinetum.