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Eryngium aquaticum L.
Rattlesnakemaster, Rattlesnake-master, Snakeroot
Apiaceae (Carrot Family)
USDA Symbol: ERAQ
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.
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Plant CharacteristicsDuration: Biennial
Fruit Type: Schizocarp
Size Notes: Up to about 6 feet tall.
Bloom InformationBloom Color: White , Green , Blue , Purple
Bloom Time: Jun , Jul , Aug , Sep , Oct , Nov
DistributionUSA: 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 ConditionsLight Requirement: Part Shade
Soil Moisture: Wet
Soil Description: Wet, somewhat acid, soils.
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationCommercially Avail: yes
National Wetland Indicator Status
From the National Organizations DirectoryAccording 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 ReferenceWebref 57 - Atlas of Florida Plants (2020) Institute for Systematic Botany
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Eryngium aquaticum in USDA Plants
FNA: Find Eryngium aquaticum in the Flora of North America (if available)
Google: Search Google for Eryngium aquaticum
MetadataRecord Modified: 2023-02-08
Research By: TWC Staff