Dexter sits on artesian water, which is why this stretch of the valley is green at all, and why lawns here repay the attention they get. Roswell Lawn Care & Landscaping runs the road between Dexter and Roswell keeping that grass on schedule — mowing, edging, trimming and clearing the cuttings away. Late afternoon is the good hour, when light comes in level across the fields and the heat finally backs off enough to work. Every yard is finished out to the boundaries, including the strip along the road that most people skip. What is left when the truck pulls out is a lawn squared up to the road, the grass laid over in even rows.