North of Dacula the land starts leaning toward the mountains, ridges stacking away until the air coming off them turns the first cool nights of September. North Georgia Lawn Care works the ground below — mowing on a set cycle, trimming what the mower cannot reach, edging concrete, clearing leaves once the hardwoods finally give in. Fescue holds on in the shaded yards up this way while bermuda takes the open sun, and the two ask for different timing. The season is long, roughly April through Thanksgiving, and the routes run the whole length of it. A clean lawn under a hard blue Georgia sky is a fine thing to leave behind.