smooth blue aster

Symphyotrichum laeve


Smooth Blue Aster, also known simply as Smooth Aster, is a tough, beautiful native perennial that delivers clouds of soft lavender-blue flowers in late summer and fall. Its smooth, bluish-green foliage forms an attractive, upright clump that stays tidy all season, then erupts with daisy-like blooms that pollinators can’t resist. This aster is exceptionally easy to grow, thriving in full sun and average to dry soils once established. Butterflies, moths, and bees flock to it, and its late bloom time makes it a critical nectar source at the end of the season. Smooth Blue Aster is drought-tolerant, easily self-seeds, and spreads slowly, making it a reliable choice for low-maintenance landscapes, prairie plantings, and native gardens.

Details for Care:

  • Soil = Average, Dry, Medium-Moist, Well-Drained, Loamy, Clay & poor soils tolerant

  • Sun = Full Sun, Partial shade

  • Maximum Height = 2 to 4 feet

  • Bloom Time = August to October

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