By evening the June heat lifts off the McLean County prairie and Danvers goes gold, one long shadow per tree. That's the hour Graden Lawn & Exterior likes best: the mower finishing its last pass, the smell of cut grass hanging over a yard, stripes lying down the lawn as neat as rows in a field. Mowing, trimming around posts and fences, edging where turf meets walk, and carrying off the clippings is plain work, done until the yard looks settled. Come autumn the same properties get raked out and cleaned up before the wind takes the leaves down the block. In a village this size, a well-kept front lawn is part of the street's good manners.