Calflora
Taxon  Report   161    
Ailanthus altissima  (Mill.) Swingle
Ailanthus,  Tree of heaven
Ailanthus altissima
© 2014 Dr. Amadej Trnkoczy
Photos from
CalPhotos / Calflora
Ailanthus altissima
© 2018 Carolyn Martus
Ailanthus altissima
© 2005 George W. Hartwell
Ailanthus altissima, a dicot, is a tree that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: Moderate

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Ailanthus altissima
© 2017 Angelique Herman
Family: SIMAROUBACEAE  
Genus: Ailanthus
Communities: weed, characteristic of disturbed places

Toxicity: MINOR, DERMATITIS

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Habitat: disturbed

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Ailanthus glandulosa
PLANTS: Toxicodendron altissimum
More information about  Ailanthus altissima
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (AIAL)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google

Conservation New England:  Ailanthus altissima is native to Asia, and began its journey west by being introduced to Europe in 1751 by a French Jesuit preist who brought it from Nanking, China to England. The first known specimen was brought into the United States a few decades later by William Hamilton, who planted this species in Philadelphia (Shah 1997). People admired the beautiful foliage of these fast-growing trees, and for over a century have been planting it as an ornamental ...


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: https://www.calflora.org/   (Accessed: Dec 18, 2018).