Out on the eastern edge of Denver the city thins into open sky, and the plains send their weather straight in — full sun most days, wind with nothing to slow it, and a June afternoon that can hand you a thunderstorm and a rainbow inside an hour. Altitude Landscaping LLC keeps lawns going in that exposure, cutting a little higher when the heat stacks up so the roots stay shaded and the color holds through the dry stretch. Mowing lines run long out here because the lots are generous, and the edging is what gives all that open green a shape. Spring starts with clearing off the winter's grit; autumn ends with the leaves and the last cut of the year. In between there's the plain pleasure of a big yard mown even and true under a very large sky.