Late in the day the Blackhead Range goes blue-black over Durham Valley, and the last hour of mowing happens in that long slanted light. lawn enforcement takes the yards on the valley floor and the ones climbing out of it, with weekly cutting, string trimming around posts and culverts, edging where lawn meets gravel, and cleanups at both ends of the green season. Wind funnels down this valley and drops branches on everything, so a fair share of the job is simply clearing what last night left behind. A yard finished properly holds its shape all week, and you can read the boundary from the road. That is the reason for coming back every seven days.