Riverdale is mid-Michigan flat, the kind of country where a mown lawn is the only shape the eye can rest on between the corn and the Pine River treeline. Pure Perfection Lawns LLC mows and trims straight through that long open summer, holding edges tight along drives that run a hundred feet out to the road. July here can go three weeks without rain and then make the whole deficit up in one night, so cut height follows the ground rather than the calendar. Autumn brings the clearing work — leaves off the turf before the first hard freeze locks them down for good. Riverdale, Vestaburg, Elm Hall and the farm roads toward Alma.