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Ambrosia psilostachya DC.
Cuman ragweed, Western ragweed, Perennial ragweed, Common ragweed
Synonym(s): Ambrosia californica, Ambrosia coronopifolia, Ambrosia cumanensis, Ambrosia psilostachya var. californica, Ambrosia psilostachya var. coronopifolia, Ambrosia psilostachya var. lindheimeriana, Ambrosia rugelii
USDA Symbol: AMPS
USDA Native Status: L48 (N), CAN (N)
Bloom InformationBloom Color: White , Green
Bloom Time: Jul , Aug , Sep , Oct
Bloom Notes: Bloom season may extend to December.
, WY Canada: AB
Growing ConditionsLight Requirement: Sun , Part Shade
Soil Moisture: Dry
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2013-11-14
Research By: TWC Staff