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Vernonia gigantea ssp. gigantea (Walt.) Trel.
Giant ironweed, Tall ironweed
Synonyms: Vernonia altissima
USDA Symbol: VEGIG
USDA Native Status: Native to U.S.
A tall, clump-forming perennial, growing 5-8 ft. tall. Slightly rough stems bear lance-shaped, deep-green leaves. Small flower heads occur in loosely branched, terminal clusters. Flowers are all of the disk type and reddish-purple.
Plant CharacteristicsDuration: Perennial Habit: Herb Fruit: Size Class:
Bloom InformationBloom Color: Purple
Bloom Time: Aug , Sep , Oct
AL , AR , DE , FL , GA , IA , IL , IN , KS , KY , LA , MD , MI , MO , MS , NC , NY , OH , OK , PA , SC , TN , TX , VA , WV Native Distribution:
W. NY to e. NE, s. to SC, GA & LA Native Habitat:
Low, open woods; alluvial areas; prairies; marsh & swamp borders USDA Native Status: L48(N), CAN(N)
Growing ConditionsLight Requirement: Part Shade , Shade
Soil Moisture: Wet
Soil Description: Moist to wet soils.
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
PropagationDescription: Not Available
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
- Newark, DE
Recommended Species Lists
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Record Modified: 2007-01-01
Research By: TWC Staff