By late afternoon in monsoon season the thunderheads stack up east of town and the shadow on the Carefree sundial stretches long and thin. Iron Mountain Irrigation keeps lawns and yards mowed, trimmed and tidy along Ho Hum Road and the quiet lanes that run off it, working with the desert's own schedule instead of against it. After a storm the washes run brown for an hour and everything green doubles overnight, so grass, weeds and edges all come due at once. There is real satisfaction in a yard that comes out of a wet week looking deliberate — level, bordered, carried clean of debris. Carefree came by its name honestly; keeping a yard that way takes a steady hand.