September in Evergreen arrives with gold in the aspens on Elephant Butte and elk bugling somewhere in the dark before dawn. That is the season Colorado Nature Design Inc likes best: the grass slows down, the light turns amber, and a lawn cut clean holds its lines for weeks. Their work is mowing, edging and the long fall sweep — needles, leaves, the season's whole quiet shedding gathered off the turf before the first hard freeze locks it down. They keep the borders where turf meets Gambel oak looking intentional rather than forgotten. A yard put to bed properly in autumn is the reason it comes back well the following summer.