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Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Oxypolis rigidior (Stiff cowbane)
Cressler, Alan

Oxypolis rigidior

Oxypolis rigidior (L.) Raf.

Stiff Cowbane

Apiaceae (Carrot Family)

Synonym(s): Oxypolis longifolia, Oxypolis rigidior var. ambigua, Oxypolis rigidior var. longifolia, Oxypolis turgida


USDA Native Status: L48 (N), CAN (N)


From the Image Gallery

11 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Schizocarp
Size Notes: Up to about 5 feet tall.

Bloom Information

Bloom Color: White , Pink
Bloom Time: Jul , Aug , Sep , Oct


USA: AL , AR , DC , DE , FL , GA , IA , IL , IN , KY , LA , MD , MI , MN , MO , MS , NC , NJ , NY , OH , OK , PA , SC , TN , TX , VA , WI , WV
Canada: ON
Native Habitat: Wet Meadow/Prairie/Field,Swamp/Marsh

Growing Conditions

Light Requirement: Part Shade
Soil Moisture: Wet
Soil Description: Clay, Sand, Loam

Value to Beneficial Insects

Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

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.


Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.

Search More Titles in Bibliography

Web Reference

Webref 57 - Atlas of Florida Plants (2020) Institute for Systematic Botany
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Oxypolis rigidior in USDA Plants
FNA: Find Oxypolis rigidior in the Flora of North America (if available)
Google: Search Google for Oxypolis rigidior


Record Modified: 2023-01-11
Research By: TWC Staff

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