Botanical Name: Symphyotrichum puniceum
Height: Tall, over 1m.
Season of bloom: September.
Growing Conditions: Full sun.to light shade. Reliably moist soil. Clump-forming; does not run
Wildlife benefits: All the late-season asters are important food sources for wild bees, bee flies, and many other insects. Purple-stemmed Aster’s leaves are eaten by caterpillars of the butterflies Silvery Checkerspot and Pearl Crescent.
From Ottawa Valley or eastern Ontario sources: Yes.
Remarks: Also called Swamp Aster. An excellent plant for shoreline naturalization but the relatively large blue flowers also make it a candidate for a moist spot in the perennial garden. It will be “bare below the knees” by the time it flowers, so place it behind other plants in the border.
Similar species: Heart-leaved Aster.
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More Plants for Shores and Wetlands.