E-Flora BC: Electronic Atlas of the Flora of British Columbia

Caragana arborescens Lam.
Siberian peashrub
Fabaceae (Pea family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #85670)

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Distribution of Caragana arborescens
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This is an introduced shrub species from the pea family that is native to China, Siberia, and Mongolia. It is now widespread in some parts of Canda and the US (US--AK, CA, CO, IA, ID, IL, MA, MD, ME, MI, MN, MT, ND, NE, NM, OR, SD, UT, WA, WI, WY; CANADA--AB, BC, MB, NB, NT, ON, QC, SK, YT) (USDA 2010), and is commonly grown as an ornamental and landscape plant. It was introduced to the Great Plains area for erosion control and as a hedgerow species, but has invaded the understorey of deciduous forests in the region where it competes with native species such as beaked hazelnut (Corylus cornuta) (Henderson and Chapman 2006). This is a large spiny shrub which reaches height of 12 feet to 15 feet. It has clusters of yellow flowers.

Synonyms and Alternate Names

Caragana arborescens var. pendula Carriere
Caragana fruticosa (Pall.) Besser

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

Species References

Henderson, Darcy C. and Ross Chapman. 2006. Caragana arborescens Invasion in Elk Island National Park, Canada. Natural Areas Journal 26(3):261-266.

General References