Aromatic Aster
Symphyotrichum oblongifolium
Notes:

From what I've read, Asters are one of the best caterpillar host plants. The adult pollinators also like them.

Asters tend to bloom late in the season. It seems Aromatic Asters bloom extra late. In this yard, they don't bloom until around the second week of October. The bees seem to appreciate them when most other flowers are long done for the year.

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It really boils down to this: that all life is interrelated. We are all caught in an inescapable network of mutuality, tied into a single garment of destiny. Whatever affects one destiny, affects all indirectly.
Martin Luther King, Jr.