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Eupatorium hyssopifolium
Also called Hyssop Leaf Thoroughwort, Hyssop Leaved Boneset, Hyssop Leaved Thoroughwor, Hyssop Leaved Thoroughwort, Hyssopleaf Boneset, Hyssop Leaf Eupatorium
Hyssopleaf thoroughwort is a fall-blooming North American perennial wildflower, about 0.5 to 1 m tall, with clusters of tiny white flower heads. It is a native plant of moist woodlands, savannas and roadsides rather than a common garden ornamental.
Eupatorium hyssopifolium, also known as hyssopleaf thoroughwort, is a fall-blooming herbaceous plant native to North America. Like other members of the genus Eupatorium it has inflorescences containing a large number of very small flower heads, each with 5 white disc florets but no ray florets. At 0.5 to one meter (20-40 inches) tall, it is towards the shorter end of the range of heights found in Eupatorium species.
Plants which are classified as E. hyssopifolium can be either diploid or polyploid, and some of them seem to have been the result of past hybridizations with Eupatorium serotinum. Hybrids with E. album and E. linearifolium also seem to exist. The hybrid E. torreyanum is similar to E. hyssopifolium but is a hybrid of E. serotinum and Eupatorium mohrii.
Eupatorium hyssopifolium is found in much of the eastern and south-central United States, from Massachusetts west to Wisconsin, and as far south as Texas and Florida. Listed as endangered in the state of Ohio. It grows in moist soils and can be found in woodlands and oak savannas, pastures, fields, roadsides, and disturbed areas, over both acidic and calcareous substrates.
Eupatorium hyssopifolium can be used medicinally (applied externally for insect and reptile bites). It can also be planted near crops to attract beneficial insects.
White thoroughwort · Tall thoroughwort · Eupatorium amabile · Florida thoroughwort · Eupatorium benguetense · Eupatorium camiguinense · Hemp-agrimony · Dogfennel · Eupatorium chinense · Yankeeweed · Ground Qalanis · Chinese Eupatorium
Text excerpted from the Wikipedia article Eupatorium hyssopifolium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
