On a July afternoon the side streets off Tyler are all mower sound and cut-grass smell, and Pittsfield is doing the best thing it knows how to do with a short summer. Jim's Lawn Care keeps a route through those neighborhoods -- mowing, trimming around posts and hydrants and porch steps, edging the walks, and cleaning up so the sidewalk is bare when the truck pulls away. Small yards deserve the same square corners as big ones. Grass in the Berkshires grows hard in June and slows in August, and a good schedule follows that rather than fighting it. Week by week it adds up to a street that looks cared for.