Some mornings the Susquehanna sends its fog up over the flats, and the lawns of Union come out of it wet and shining. Sawyer's Lawn Service works those hours — mowing while the ground still holds a little of the night, then trimming and edging as the valley opens and the light turns ordinary and warm. A yard here can go from shaggy to squared in an afternoon: stripes laid straight, the edge along the walk cut clean enough to run a finger down. Grass grows fast in a river town, and keeping pace with it is a rhythm more than a chore. This is lawn care for Union and the towns around it, done one clean line at a time.