Covert is blueberry country on sand, a few miles inland from Lake Michigan, where July mornings come in cool and the afternoons run bright and dry. Gardner Lawn and Snow LLC mows the yards between the fields and the shore road, working with soil that drains fast and grass that needs a thoughtful cutting height to stay green through the heat. Trimming squares off the corners around posts, decks and the sandy edges where lawn gives way to two-track. Spring opens with a cleanup, fall closes with the leaves, and everything in between is the weekly cut. A neat lawn out here reads plainly against all that open country.