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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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Eryngium aquaticum

Eryngium aquaticum L.

Rattlesnakemaster, Rattlesnake-master, Snakeroot

Apiaceae (Carrot Family)



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

Scattered along the stiff, upright, branched stem, which grows 3-6 ft., are narrow, pinnately veined leaves. The individual, greenish-white flowers cluster into unique, globular heads.


From the Image Gallery

No images of this plant

Plant Characteristics

Duration: Biennial
Habit: Herb
Fruit Type: Schizocarp
Size Notes: Up to about 6 feet tall.

Bloom Information

Bloom Color: White , Green , Blue , Purple
Bloom Time: Jun , Jul , Aug , Sep , Oct , Nov


USA: AL , DC , DE , FL , GA , MD , MS , NC , NJ , NY , PA , SC , VA
Native Distribution: Coastal areas from s.e. NJ to FL & MS
Native Habitat: Coastal bogs & marshes; wet pinelands

Growing Conditions

Light Requirement: Part Shade
Soil Moisture: Wet
Soil Description: Wet, somewhat acid, soils.

Value to Beneficial Insects

Special Value to Native Bees

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


Commercially Avail: yes

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.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Plant Center at Westchester Community College, The - Valhalla, NY
Mt. Cuba Center - Hockessin, DE

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


Record Modified: 2023-02-08
Research By: TWC Staff

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