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Swamp thistle

Plant Type: Herbaceous
Habitat: Wetland
Light Requirements: sun, part sun
Soil Moisture: mesic, wet
Soil Type: All
Height: 3 - 9 ft
Bloom Time: Summer - Fall
Flower Colour: purple
Comments: wet swampy places
Germination: Seed will germinate within 4 weeks if sown at 70°F. Seed will germinate upon being shifted to 70°F after 90- 140 days of moist, cold stratification at 40°F.
Picture Copyright: Clarence A Rechenthin @ USDA-NRCS PLANTS Database