A lawn keeps its own calendar, and in Springdale that calendar runs from the first warm week of April to the last mild afternoon in November. JohnnyReliablellc works to it, mowing on the week's turn, trimming the fence line, edging the drive and walks so the whole property has a defined shape. Saturday mornings out past Croft Farm still sound like small engines and screen doors, and there is something good about being part of that sound. The best measure of the job is how little anyone has to think about it afterward: the grass is cut, the corners are clean, the yard is simply right. That is the entire ambition.