October in Four Square Mile is a short and generous season. The honeylocust and ash turn yellow all at once, the light lies long across the lawns, and downtown Denver stands up sharp on the western skyline with the Rockies stacked behind it. Denver Lawn and Landscape spends those weeks on the last mowings of the year, on edging that keeps a line honest under falling leaves, and on cleanups that clear beds and turf down to bare, breathing grass. Core aeration and a fall feeding go in while the soil still holds its warmth, which is the whole secret behind a lawn that greens up early come May. Then the yard sits squared away under the first hard frost, waiting.