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Eupatorium cannabinum
Also called Hemp Thoroughwort
Hemp-agrimony is a tall, robust perennial native to damp places across Europe, North Africa and Central Asia, grown for its pink or purple flower heads that attract butterflies. It thrives in moist soil and sun or part shade.
Eupatorium cannabinum, commonly known as hemp-agrimony, is a herbaceous plant in the family Asteraceae. It is a robust perennial native to Europe, Northwestern Africa, Turkey, Syria, Iran, Iraq, Jordan, the Caucasus and Central Asia, and grows in damp to wet habitats (also rarely on dry soils), usually in lowlands but known up to 410 m altitude in Britain. It is cultivated as an ornamental plant and occasionally found as a garden escape in scattered locations in China, the United States and Canada. It is extremely attractive to butterflies, much like buddleia.
If the genus Eupatorium is defined in a restricted sense (about 42 species), E. cannabinum is the only species of that genus native to Europe, with the remainder in Asia or North America.
Eupatorium cannabinum contains tumorigenic pyrrolizidine alkaloids. The alkaloids may be present in the plant material as their N-oxides.
Text excerpted from the Wikipedia article Eupatorium cannabinum 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.
