Spring reaches Lake County from the bottomlands first — the Des Plaines running high, Van Patten Woods greening while town is still gray. Diego's Landscaping of Lake County, Inc. reads that signal and starts its Waukegan routes. Mowing, edging, trimming and cleanups, held to a schedule that stretches from the first warm week to the last. Grass out here grows in bursts after rain, and keeping pace with it is the craft. A lawn cut on time looks nothing like a lawn cut late, and every neighbor on the block can tell.