The land around Lake Geneva was left behind by ice — long low hills the glacier rolled out and dropped, so that hardly a yard here sits truly flat. Baldi Lawn & Landscaping mows those slopes in June, when the grass grows faster than anyone quite believes and the mower has to be walked along a grade to keep the cut even. Beds get shaped where the hill turns, mulch laid so a hard rain doesn't carry it down the drive. Anyone can cut grass on level ground; a kettle-moraine lot asks for a steadier hand and a slower pass. What comes of it is a lawn that follows its own contour and still looks deliberate, right down to the last run along the fence.