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Vernonia fasciculata Michx.
Prairie Ironweed, Common Ironweed
Asteraceae (Aster Family)
USDA Symbol: vefa2
USDA Native Status: L48 (N), CAN (N)
The stout, unbranched, 2-4 ft. stems bears numerous lance-shaped, coarsely-toothed, dark-green leaves. Attractive floral sprays are composed of densely clustered, rose-purple flowers.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Size Notes: Up to about 4 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Purple
Bloom Time: Jul , Aug , Sep
DistributionUSA: AR , CO , IA , IL , IN , KS , KY , MA , MN , MO , MS , MT , ND , NE , NY , OH , OK , SD , WI
Canada: MB , ON , SK
Native Distribution: OH to Sask., s. to TX; introduced elsewhere
Native Habitat: Wet prairies; marshes
Growing ConditionsLight Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist , Wet
Soil Description: Fertile, moist to wet soils.
Conditions Comments: Too aggressive for small areas. Needs competition.
BenefitConspicuous Flowers: yes
Larval Host: Larval host for American painted lady.
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
Mr. Smarty Plants says
Host plants for American Painted Lady larvae in Ohio
June 25, 2009
Need to know what plants to plant as host plants for American Painted lady butterflies have larve coming in mail in few days , live in Vermilion Ohio on the Lake Erie. Thank You for your knowledge Pa...
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National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Plant Center at Westchester Community College, The - Valhalla, NY
Texas Discovery Gardens - Dallas, TX
Native Seed Network - Corvallis, OR
BibliographyBibref 928 - 100 easy-to-grow native plants for Canadian gardens (2005) Johnson, L.; A. Leyerle
Bibref 946 - Gardening with Prairie Plants: How to Create Beautiful Native Landscapes (2002) Wasowski, Sally
Search More Titles in Bibliography
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Vernonia fasciculata in USDA Plants
FNA: Find Vernonia fasciculata in the Flora of North America (if available)
Google: Search Google for Vernonia fasciculata
MetadataRecord Modified: 2023-01-30
Research By: TWC Staff