The East Branch of the DuPage River slides past the edge of town under old cottonwoods, and by July the whole village smells like cut grass and river damp. DuPage Lawn Care works that heat — weekly mowing, string trimming, edging along walks and drives, bed maintenance and mulch, and the cleanups that come when the leaves finally do. Summer turf in this county wants a taller cut and a sharper blade than most people expect, and the difference announces itself in the color a week later. There is genuine satisfaction in pulling away from a yard that looks like it was ironed. Lombard, Glen Ellyn, Villa Park, Wheaton and Downers Grove, on the same day each week.