There are pockets of Naperville that stay cool all summer — glens under burr oaks where the shade lies deep and the grass grows thin and slow. Willow Glen Landscape, Inc. tends those yards and the sunny ones both: mowing to the season's height, trimming and edging, refreshing mulch in the beds, and clearing leaves when the oaks finally let go in November. Shade lawns ask for patience and open lawns ask for pace, and a well-built route allows for each. Late October here turns the entire canopy at once, so the cleanup is half work and half spectacle. What gets left behind is a yard that looks composed from the street and comfortable to stand in.