In the fall, gardens are full of both asters and butterflies. There are lots of the white cabbage-type butterflies that have been around since early spring, monarchs preparing for their long journey south, yellow sulphurs doing their swirling dance in the air and scads of tiny brownish-orange butterflies whose names I don't even know. About once a day a red admiral or two pops through, flying quickly and never stopping anywhere very long.
The butterflies land on the few flowerheads left on the butterfly bushes, then move on to the hundreds of small, daisy-like blossoms adorning the various asters. The colorful flyers seem especially partial to the taller aster varieties...maybe because those statuesque plants are closer to the sky? The lower growing asters, like those of the Woods series (Woods Blue, Woods Pink, etc.), also see their fair share of butterflies, skippers and pollinating insects.