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Plants of mesic to wet open areas, such as roadside ditches, low meadows, pond margins.  Flowers August to September.  Native.

Perennial.  Typical height is from 3 to 4 feet.

Inflorescences are   

Flower heads are discoid.  Ray florets are lacking.  Disc florets are white, tubular, bisexual and fertile.

Basal leaves

 

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Similar species:  Ageratina altissima, as well as other members of the genus Eupatorium.

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