Symphyotrichum laeve – Smooth Aster

General Information: Smooth Aster is one of the earliest Asters to bloom. Beginning in September and lasting through November, the plant’s flowers attract many butterflies. Pale blue/purple composite flowers adorn smooth purplish stalks that are clasped by green lance-shaped leaves. The plant has shallow roots which produce rhizomes that spread slowly over time. They form small colonies of dense foliage and flowers at 3-4′ tall. Leaves and stems are smooth to the touch, hence the plant’s name. This plant is a host for the Pearl Crescent Butterfly, and a late-season nectar source for many other pollinators.

Cultivation Details: A beautiful choice for rewilding, filling in tough sites or roadways, attracting pollinators, or simply as a garden specimen. Consider pairing with Anise-Scented Goldenrod (Solidago odora), US Native grasses, or some of our other Aster species. Formerly classified as Aster laevis, there are many subspecies of this plant which occupy different regions of North America, owing to the plant’s successful spread across the continent.

Growing Requirements: Prefers full sun. Commonly found in rocky and dry soils. Also thrives in medium moist soil.