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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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Elodea nuttallii

Elodea nuttallii (Planch.) H. St. John

Western Waterweed

Hydrocharitaceae (Tape-Grass Family)

Synonym(s): Anacharis nuttallii, Anacharis occidentalis, Elodea columbiana, Elodea minor, Elodea occidentalis, Philotria angustifolia, Philotria minor, Philotria nuttallii, Philotria occidentalis, Udora verticillata var. minor

USDA Symbol: ELNU2

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


From the Image Gallery

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Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Capsule
Size Notes: Aquatic stems up to about 18 inches long.
Fruit: Berrylike.

Bloom Information

Bloom Color: White
Bloom Time: Jun , Jul , Aug , Sep


USA: AL , AR , CA , CO , CT , DC , DE , IA , ID , IL , IN , KS , KY , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NY , OH , OK , OR , PA , RI , SD , TN , VA , VT , WA , WI , WV , WY
Canada: NB , NS , PE

Growing Conditions

Aquatic: 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.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

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


Record Modified: 2023-04-05
Research By: TWC Staff

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