From Baldwin Hill the fields fall away toward South Egremont and Mount Everett stands up blue behind them — a valley that has been mowed, hayed and tended a long while. Four One Tree & Landscape LLC works lawns in that country: mowing, edging, trimming, and the cleanups that follow mud season and leaf-fall. Berkshire yards run to slope, ledge and shade, and each one has to be cut on its own terms. There is real pleasure in a hillside lawn that reads as one clean sweep from the road below. Egremont deserves that, from the village crossroads out to Karner Brook.