Asteraceae
White snakeroot
Ageratina altissima
- Family
- Asteraceae
- Genus
- Ageratina
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Common names
By language (8)
- Chinese
- 白蛇根, 假白花草, 蛇根泽兰
- Czech
- Nestarka bílá
- Danish
- Hvid Ageratina, Hvid Hjortetrøst
- English
- White snakeroot
- Finnish
- Isovalkolatva, Valkolatva
- Japanese
- マルバフジバカマ, 丸葉藤袴
- Korean
- 서양등골나물
- Tamil
- நாகசுவந்தை
Synonyms
- Ageratina ageratoides Spach
- Ageratum altissimum L.
- Batschia nivea Moench
- Eupatorium aboriginum Greene
- Eupatorium ageratoides var. angustatum A.Gray
- Eupatorium altissimum (L.) L.
- Eupatorium boreale Greene
- Eupatorium cordatum var. fraseri (Poir.) DC.
- Eupatorium eurybiaefolium Greene
- Eupatorium frasieri Poir.
- Eupatorium frasieri Poiret
- Eupatorium odoratum Walter
- Eupatorium roanense Small
- Eupatorium rugosum Houtt.
- Eupatorium rugosum f. rugosum
- Eupatorium rugosum var. rugosum
- Eupatorium urticifolium f. congesta Chodat
- Eupatorium urticifolium f. urticifolium
- Eupatorium urticifolium f. verticillatum Vict.
- Eupatorium urticifolium var. trifolium Farw.
- Eupatorium urticifolium var. urticifolium
- Eupatorium urticifolium var. villicaule Fernald
- Kyrstenia aboriginum Greene
- Kyrstenia altissima (L.) Greene
- Kyrstenia borealis Greene
Flowers
- In flower
- August to October (from 11,124 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native
Photos
FlowerPhoto: Ira Gershenhorn, CC0, from iNaturalist 
FlowerPhoto: Sandy Wolkenberg, CC BY 4.0, from iNaturalist 
FlowerPhoto: Étienne Lacroix-Carignan, CC0, from iNaturalist 
FlowerPhoto: willybilly, CC0, from iNaturalist 
Photo: Sten Porse, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Drahkrub . Attribution must include the URL http://de.wikipedia.org/wiki/Benutze, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Tom Scavo, CC BY 4.0, from iNaturalist 
Photo: Drahkrub . Attribution must include the URL http://de.wikipedia.org/wiki/Benutze, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Drahkrub . Attribution must include the URL http://de.wikipedia.org/wiki/Benutze, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Mike B, CC BY-SA 4.0, from iNaturalist 
Photo: sonnia hill, CC BY 2.0, from Wikimedia Commons 
Photo: Carol Ann McCormick, CC BY 4.0, from iNaturalist
More in Ageratina
- Sticky snakerootAgeratina adenophoraAsteraceae
- Spreading snakerootAgeratina ripariaAsteraceae
- Ageratina ligustrinaAsteraceae
- Western snakerootAgeratina occidentalisAsteraceae
- Lesser snakerootAgeratina aromaticaAsteraceae
- Ageratina glabrataAsteraceae
- Ageratina glechonophyllaAsteraceae
- Havana snakerootAgeratina havanensisAsteraceae
- Fragrant snakerootAgeratina herbaceaAsteraceae
- Hammock snakerootAgeratina jucundaAsteraceae
- Lemmon's snakerootAgeratina lemmoniiAsteraceae
- Ageratina macbrideiAsteraceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.