Symphyotrichum puniceum

Common name: Swamp Aster

Native plant

Swamp Aster has light to dark purple flowers with yellow centers that are on the large size for an aster.  It is a fast growing, water-loving plant.  As with most asters, it blooms late summer to early fall, lasts for about 2 months, and attracts a wide range of bees, butterflies and other pollinators looking for their last bit of nectar and pollen for the season.  Lower leaves can turn brown during hot summer months, so this plant works best in the background of plantings.


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Price Level: 
Perennial- Standard
Sizing Options: 
Flat of 32 (plugs)
Flat of 18 (pints)
1 Gallon


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Plant Details

Plant type


Soil type

Moist Mesic, Wet

Light exposure

Full Sun, Partial Sun / Part Shade

Bloom period


Urban environment

Road-side/Salt Tolerant, Yards that Flood


Prairie Grasslands, Wetlands

Growth form

Colonizing / Spreading

Growth rate


Flower color

Light Purple

Fall color



Mature height
6 Feet
Mature width
3 Feet
Max height
8 Feet
Max width
5 Feet

Additional information

Butterfly host plant Pollinator hot spot

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