One of the last wildflowers to bloom, this aster is loaded with blue-purple daisy-like flowers in late fall. This aster grows into a tidy, compact, self-supporting mound and may be grown as a hedge.Part of our Pollinator Buffet plant tag series. Active spring to fall, the small carpenter bee looks like a fat, iridescent black ant. Asters are pollinated by long-tongued bees, short-tongued bees, and visited by butterflies and skippers. Asters are host to silvery checkerspot butterfly larvae.