Symphyotrichum oolentangiense
Skyblue Aster
This native fall-blooming perennial has light blue flowers with bright yellow centers that are attractive to butterflies.
It grows 3 feet tall and slightly narrower and prefers full sun but can tolerate a range of soils.
It will spread through rhizomes and through self-seeding although it is not aggressive in the garden.
Drought tolerant.