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Vernonia

Plants of prairie ironweed (Vernonia fasciculata) in a field.

A Comprehensive Guide to Prairie Ironweed (Vernonia fasciculata)

Prairie Ironweed (Vernonia fasciculata) is a herbaceous perennial that is native to the midwestern and Great Plains of the United States and the province of Manitoba. This plant is a host to the American Lady butterfly (Vanessa virginiensis). Growing from 2 to 4 feet tall, this species grows in moist prairies and has pink to purple flowers that bloom from July to September. This plant is hardy in zones 4-9.

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