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Plant Database

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.

Rattlesnake-master, Rattlesnakemaster, 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
Size Class: 3-6 ft.

Bloom Information

Bloom Color: Green
Bloom Time: Jun , Jul , Aug , Sep , Oct


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.
Conditions Comments: Not Available

Value to Beneficial Insects

Special Value to Native Bees

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


Description: Not Available
Seed Collection: Not Available
Seed Treatment: Not Available
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

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: 2007-01-01
Research By: TWC Staff

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