Ageratina Spach.

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Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Ageratina' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/ageratina/). Accessed 2025-01-20.

Family

Compositae

Synonyms

Eupatorium, in part

Species in genus

Ageratina ligustrina

Glossary

References

Credits

Article from Bean's Trees and Shrubs Hardy in the British Isles

Recommended citation
'Ageratina' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/ageratina/). Accessed 2025-01-20.

Ageratina ligustrina can have a very long flowering season from autumn into winter if there is no hard frost, as seen here in January 2022 at Ness Botanic Gardens. Image Kevin Pratt.

This genus was treated as Eupatorium by Bean (1981).

The formerly very large genus Eupatorium has been split into several genera, of which Ageratina is one. It contains some 200 species from the southern United States through central America and south through western South America. Only Ageratina ligustrina is in temperate cultivation; some other species are noxious weeds outside their natural range (Mabberley 2017, Edwards & Marshall 2019).

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