Work starts early out here, while the Diagonal is still mostly headlights and the irrigation ditches are running cold with water out of the canyon. RBM Landscaping mows, trims and edges across Boulder — Gunbarrel cul-de-sacs, the older blocks off Iris, the long shared strips where a lawn runs out to meet the street. Spring on the Front Range arrives as an argument: sixty degrees on Tuesday, wet snow on Thursday, and grass that grows anyway. The answer is steady visits, sharp blades, and a cleanup that leaves the walks swept and the beds clear of whatever blew in overnight. By the time most of the neighborhood is pouring coffee, the mower is loaded and the yard is finished.