Morning fog sits low over the Mumford River before it burns off toward the mill blocks, and by then the mowers are already running. Calderon Landscaping handles lawn care across Uxbridge and the wider Blackstone Valley — weekly mowing, edging along walks and drives, string trimming at the stone walls, mulch worked dark into the beds. The spring cleanup lifts winter's litter off the grass; the fall round takes the maples down to bare ground again. There is real satisfaction in a stripe that runs true to the property line and an edge crisp enough to read from the road. Yard by yard, block by block, the town looks a little sharper for it.