Dusk lasts a long time up here. The sun drops behind the Rampart Range and the whole ridge holds a blue hour, porch lights coming on one at a time along the streets off Castle Pines Parkway. Jones Light & Lawn likes finishing into that light, the mower cooling, the walk blown clean, the lawn striped and settling in for the evening. Summer days at this elevation are bright enough to be hard on grass, so the cut stays high and the trimming close where fences and stone meet turf. Castle Pines, Lone Tree, and the neighborhoods out toward Parker: yards that look cared for at the hour people actually come home to see them.