September light in Heritage Greens comes in low and gold across the lawns, and the grass, relieved of August, puts on its strongest growth of the year. Keyes to Lawn Care leans into that stretch — mowing, edging the walks, trimming the tight lines, feeding the turf and aerating while the soil is still warm enough to knit back together. Earlier in the year it is the steady weekly rhythm; later it is leaves off the lawn and the yard cleared before the first hard freeze. Centennial's autumn can run warm for weeks and then turn overnight, so the fall work happens on the days it is offered. A lawn tended in September is the one that greens up first in April.