Just south of town the canyons at Matthiessen hold cool air even in August, and Oglesby feels a little of it on the good days. IV landcare LLC keeps lawns across the Illinois Valley cut and tidy — mowing on a schedule, string trimming the awkward corners, edging where turf runs up to concrete, clearing spring and fall debris. The old canal towns along the river all have deep, narrow lots that reward a careful hand and a smaller machine. Finished, block by block, they read as one long green ribbon down the street. Oglesby and the surrounding Illinois Valley communities make up the week.