1. ironweed

noun. any of various plants of the genus Vernonia of tropical and warm regions of especially North America that take their name from their loose heads of purple to rose flowers that quickly take on a rusty hue.


  • herb
  • vernonia
  • genus Vernonia


  • iron (English)
  • weed (English)
  • weod (Old English (ca. 450-1100))

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Sentences with ironweed

1. Verb, non-3rd person singular present
Adult Painted Lady butterflies like asters, thistle, cosmos, sunflowers, blazing star, joe pye weed and ironweed.

2. Noun, singular or mass
Anytime ironweed is in bloom on a windy day, the plant will be propagated throughout the garden.