Fog lies low in the field grass off the Falling Waters Trail most mornings here, and it doesn't lift until the sun has climbed clear of the treeline. That's when the mowing starts in Spring Arbor township — BAFAC HOME IMPROVEMENT cutting, trimming and edging yards from the newer subdivisions back to the places where the lawn simply runs out into farmland. There's satisfaction in a yard that reads as one continuous sweep of green, the stripes laid straight, the border along the walk cut sharp enough to see from the road. Summer here is long and generous, and a lawn asks for attention every week of it. Homeowners along Spring Arbor Road and out toward Concord get their Saturdays back, and the yard looks like somebody meant it.