The first mow of the year in Randall usually arrives right around the time the lilacs open, when the air smells faintly purple and the grass has turned from tired straw to sudden green. Crosby & Sons Construction tends lawns across this small Morrison County town, mowing them back to an even height and tidying the edges along sidewalks and flower beds. Spring growth comes on in a rush here, and keeping up with it is half the art: a yard mowed on time stays neat all week. By Memorial Day the lawns Crosby & Sons cares for can take flags, lawn chairs and the first cookout in stride. The whole block looks better for it.