Taxon  Report   117 
Ageratina adenophora  (Sprengel) R. King & H. Robinson
Sticky snakeroot,  Thoroughwort
Ageratina adenophora
© 2015 Richard Spellenberg
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Ageratina adenophora
© 2015 Barry Breckling
Ageratina adenophora
© 2009 Thomas Stoughton
Ageratina adenophora, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: moderate

Ageratina adenophora is classified by the U.S. Federal Government as a NOXIOUS WEED. [USDA 2000]

Interactive Distribution Map

Observation Hotline
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point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Ageratina adenophora
© 2009 Neal Kramer
Genus: Ageratina
escaped cultivar
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Distribution by County 

Add an Observation of  Ageratina adenophora

Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Eupatorium adenophorum
PLANTS: Eupatorium glandulosum
More information about  Ageratina adenophora
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


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website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Feb 23, 2018).

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