Taxon  Report   283 
Amaranthus retroflexus  L.
green amaranth,  red root pigweed, red rooted amaranth, redroot amaranth, rough pigweed

Amaranthus retroflexus
© 2005 Louis-M. Landry
Amaranthus retroflexus
© 2007 Neal Kramer
Amaranthus retroflexus, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

 Interactive Distribution Map 

 Observation Hotline 
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 Plant Characteristics
 and Associations

Bloom Period
Amaranthus retroflexus
© 2008 Louis-M. Landry
Genus: Amaranthus
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Wetlands:Usually occurs in non wetlands, but occasionally found in wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Amaranthus retroflexus

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

PLANTS: Amaranthus retroflexus var. salicifolius
 Information about  Amaranthus retroflexus  from other sources:

Photos on CalPhotos / Google Images

website references on Google

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation. on the
International Plants Names Index

Search (Flora of North America)

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]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 04, 2015).

The information on this page comes from diverse sources. None of the links are sponsored.

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