Eupatorium cannabinum, commonly known as Hemp-agrimony, is a herbaceous plant of the family Asteraceae. It is a robust perennial native to many areas of Europe. It is occasionally found as a garden escape in other areas such as British Columbia.
E. cannabinum grows to 1.5 meters (5 ft) tall or more and 1.2 meters (4 ft) wide. It lives in moist low-lying areas in temperate Eurasia. It is dioecious, with racemes of mauve flowers which are pollinated by insects from July to early September. The flowers are tiny, fluffy and can be pale dusty pink or whitish. The fruit is an achene about 2 or 3 mm long, borne by a pappus with hairs 3 to 5 mm long, which is distributed by the wind. The plant over-winters as a hemicryptophyte.
- Eupatorium cannabinum L. subsp. cannabinum
- Eupatorium cannabinum L. subsp. corsicum (Req. ex Loisel.) P.Fourn.
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