A tree throws a long shadow across a Boise yard at seven in the morning, and by nine it has pulled itself in tight to the base — that is about how much cool a crew gets to work with on a hot day. Sun River Lawn & Landscaping spends it well, mowing, edging and trimming while the grass still has dew-weight to it and the day is manageable. The lawn comes out level and the border comes out sharp, which is what makes a green square hold its own on the block. Clippings are blown off the drive and the sidewalk before anyone leaves. The route takes in Boise and the nearby towns.