Home » Plants » Eupatorium cannabinum

Hemp Agrimony (Eupatorium cannabinum L.)

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Summary
Range
Habitat
Life Cycle
Uses
Relatives
Notes
Links
Photos

Photo © Caleb Catto, CC BY 4.0.

↑Summary

The only Eupatorium native to Europe, introduced at a few locations in North America; superficially resembles the Eutrochium genus, to which it is less closely related.

↑Range - Expand

Legend	Color
Introduced
Introduced or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.

Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.

This species has also been introduced in British Columbia, Canada; we have not yet built the portion of its range map in Canada.

↑Habitat

This species' habitat preferences in North America are not well known. It likely has some invasive potential and is not more widely established largely because it is not widely planted. It has become more invasive in South Asia near the foothills of the Himalayas, and also in East Asia.

In its native range, it is found in wetlands, including marshes, fens, and swamps, and along streambanks, in moist woods, and at cliff bases. It has a preference for higher pH wetlands with higher mineral content, a trait it shares in common with spotted joe pye weed (Eutrochium maculatum), and it also prefers habitats with a high nitrogen content.

↑Life Cycle

This species is a perennial. The flowers are self-fertile, but can also be pollinated by a variety of insects. Seeds are dispersed by wind.

↑Uses

This species is occasionally used as a landscaping plant. Because it has invasive potential, we strongly recommend not planting it anywhere outside its native range. A visually-similar substitute include the five native Eutrochium species, called Joe-Pye weeds.

This species is most closely related to the Eupatorium species native to China, including Eupatorium chinense, and various other species, none of which are found in North America.

It is less closely related to the Eupatorium species native to North America, however, it is probably more closely related to most of them than it is to dogfennel (Eupatorium capillifolium).