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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Humankind has not woven the web of life. We are but one thread within it. Whatever we do to the web, we do to ourselves. All things are bound together. All things connect.
Chief Seattle
1855