There is a week in Pueblo, usually late in March, when a warm wind comes over the mountains and the brown lawns of Highland Park turn the corner all at once. Chem Way Inc works with that turn — mowing and trimming through the season, tending turf, clearing out whatever winter left behind so the grass has room to come back. Thin air and low humidity make a lawn here a different animal than one in wetter country; it wants steady attention more than it wants fuss. The crew takes the long view, and yards show it by midsummer. Green, even and level, right out to the sidewalk.