Come October the pines around Riverdale let their needles down in a soft rust-colored layer, and the sweetgums drop their spiny little globes on top of it. Woodlawn Lawn Care works that season the way it works the green ones — mowing while there is still growth, raking and blowing leaves, clearing beds and cleaning out the corners where litter collects. Shade yards in this part of Clayton County ask for patience; the grass thins under the canopy and the fall never quite stops falling. The good part is the after: open turf, swept walks, beds edged and dark. That is what the leafy side of Riverdale asks for.