page_title: Eupatorium altissimum
hierarchical_section_title: Eupatorium altissimum
caption_attribution_description: close up image of Eupatorium altissimum TALL BONESET at the James Woodworth Prairie Preserve - several blooms at flower, showing individual flowers detail This species is featured in the soon-to-be-published book, Abundant Splendor: Wildflowers of the Tall Grass Prairie. Contact frank@black-sweater-art.com for more information
context_page_description: Eupatorium altissimum, the tall thoroughwort, is a perennial plant whose native range includes much of the eastern and central United States and Canada Ontario south to Nebraska, eastern Texas, the Florida Panhandle, and Massachusetts. It almost always grows on limestone soils, as does Brickellia eupatorioides, with which it is often confused. It can hybridize with Eupatorium serotinum.
  Eupatorium altissimum is a perennial herb sometimes more than 150 cm (5 feet) tall. Leaves and stems are covered with whitish hairs. The plant produces a large number of small white flower heads in a large flat-topped array at the top of the plant. Each head generally has 5 disc florets but no ray florets.
  Eupatorium altissimum is part of Eupatorium even when that genus is defined narrowly to include about 40 species of mostly white-flowered plants of North America, Asia, and Europe.
context_section_description: Eupatorium altissimum, the tall thoroughwort, is a perennial plant whose native range includes much of the eastern and central United States and Canada (Ontario south to Nebraska, eastern Texas, the Florida Panhandle, and Massachusetts.  It almost always grows on limestone soils, as does Brickellia eupatorioides, with which it is often confused.  It can hybridize with Eupatorium serotinum.
  Eupatorium altissimum is a perennial herb sometimes more than 150 cm (5 feet) tall. Leaves and stems are covered with whitish hairs. The plant produces a large number of small white flower heads in a large flat-topped array at the top of the plant. Each head generally has 5 disc florets but no ray florets.
  Eupatorium altissimum is part of Eupatorium even when that genus is defined narrowly to include about 40 species of mostly white-flowered plants of North America, Asia, and Europe.
caption: Eupatorium altissimum flower
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