July in Sherwood surprises visitors with how dry it gets — weeks of blue sky, Douglas fir shade along the north side of every yard, and lawns living on whatever water they're given. Mainstream Landscape works that stretch by mowing higher through the heat, feeding on the lawn's own schedule, and trimming and edging so the turf ends exactly where it should. Down near Stella Olsen Park the ground stays cooler and the grass runs longer; two blocks up a south-facing slope it's a different job altogether. Every visit ends with the drive and the walk blown clean. Staying green into August in this valley is something you earn one week at a time.