Smooth Blue Aster is a tall native wildflower of dry prairies and open woodlands, with smooth blue-green leaves and large, bright lavender-blue flowers in late summer. Its flowers are an important late-season nectar source for migrating monarchs and native bees preparing for winter. The species is one of the most attractive native asters for gardens.
Best time to see a Smooth Blue Aster
The best time to see a Smooth Blue Aster is August–September, when about 70% of U.S. sightings happen, based on 3,268 research-grade iNaturalist observations.
Not certain it is a Smooth Blue Aster? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Smooth Blue Aster sightings near you
Live, research-grade observations from iNaturalist. Allow location to center the map on you.
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