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Aquatic Species
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Curly Pondweed

Curly pondweed - Invasive.org

Scientific name: Potamogeton crispus L. (ITIS)

Common names: Curly pondweed, Curly-leaf pondweed

Click image to enlarge

Selected Resources

Native To: Eurasia, Africa, Australia (Catling and Dobson 1985)

Date of U.S. Introduction: Mid-1800s (Catling and Dobson 1985)

Means of Introduction: Unknown, possibly introduced accidentally with fish stocking operations (Catling and Dobson 1985; Nichols and Shaw 1986)

Impact: Forms dense mats that inhibit growth of native species and impede recreational activities (Catling and Dobson 1985)

Current U.S. Distribution:


Selected Resources:

Council or Task Force

Invasive Plants of Ohio: Fact Sheet 18 - Lesser Naiad and Curly Pondweed (PDF | 316 KB)
Ohio Invasive Plants Council.
See also: Invasive Plants of Ohio for worst invasive plant species identified in Ohio's natural areas

Fact Sheet: Curly Leaf Pondweed (Apr 2016; PDF | 788 KB)
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act


Pacific Island Ecosystems at Risk (PIER) - Potamogeton crispus
USDA. FS. Institute of Pacific Islands Forestry.

Invasive Plant Atlas of New England (IPANE) - Curly-leaved Pondweed
University of Georgia. Center for Invasive Species and Ecosystem Health.

Invasive Plant Atlas of the United States - Curly-leaved Pondweed
University of Georgia. Center for Invasive Species and Ecosystem Health.

Species Information Sheets - Curly Pondweed
Michigan State University. Midwest Invasive Species Information Network.

Invasive Species Compendium - Potamogeton crispus
CAB International.

Plantwise Technical Factsheet - Curlyleaf Pondweed (Potamogeton crispus)
CABI. Plantwise Knowledge Bank.

Global Invasive Species Database - Potamogeton crispus (aquatic plant)
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Federal Government

Nonindigenous Aquatic Species Database: Fact Sheet - Curly-leaf Pondweed
DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).

U.S. National Plant Germplasm System - Potamogeton crispus
USDA. ARS. National Genetic Resources Program. GRIN-Global.

PLANTS Database - Curly Pondweed
USDA. NRCS. National Plant Data Center.

National Exotic Marine and Estuarine Species Information System (NEMESIS): Chesapeake Bay Introduced Species Database - Potamogeton crispus
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.

State Government

Aquatic Invasive Species: Curlyleaf Pondweed (Apr 2009; PDF | 644 KB)
Indiana Department of Natural Resources.
See also: Invasive Species for exotic animal and plant pests invading Indiana, causing economic and visual damage

Curlyleaf Pondweed: New Management Ideas for an Old Problem (PDF | 178 KB)
Minnesota Department of Natural Resources. Exotic Species Program.

Invasive Plants in Pennsylvania: Curly Pondweed (PDF | 191 KB)
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands

Freshwater Aquatic Invasive Species in Rhode Island: Curlyleaf Pondweed (Sep 2010; PDF | 707 KB)
Rhode Island Department of Environmental Management. Office of Water Resources.
See also: Aquatic Invasive Plants for species of concern

Whatcom Weeds: Curly-Leaf Pondweed (PDF | 361 KB)
Whatcom County Noxious Weed Control Board (Washington).
See also: Noxious Weed Fact Sheets for more species

Curly-Leaf Pondweed (Potamogeton crispus)
Wisconsin Department of Natural Resources.


Curlyleaf Pondweed
University of Minnesota. Minnesota Sea Grant.

Invasive Species Fact Sheet - Curlyleaf Pondweed (Sep 2007; PDF | 1.09 MB)
Mississippi State University. Geosystems Research Institute.
See also: Species Factsheets for more fact sheets

Aquatic Plants and Algae: Curly-Leaf Pondweed
Pennsylvania State University. Cooperative Extension.

Factsheet: Curly-leaf Pondweed
Pennsylvania State University. Pennsylvania Sea Grant.
See also: Aquatic Invasive Species: Resources for additional species information

AQUAPLANT - Curly-Leafed Pondweed
Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.

Aquatic Invasive Species Monitoring Training Manual: Curly-leaf Pondweed Monitoring Protocol (May 2014; PDF | 2.82 MB)
University of Wisconsin. Extension Lakes Program. Citizen Lake Monitoring Network.
See also: Aquatic Invasive Species Monitoring Training Manual for full publication

Invasive Species Fact Sheets - Curly Pondweed
University of Wisconsin Sea Grant Institute.


Maine's Interactive Field Guide to Aquatic Invaders and Their Native Look Alikes - Curly-Leaf Pondweed
Lake Stewards of Maine.
Special Note: Formerly known as the Maine Volunteer Lake Monitoring Program.


Catling, P.M. and I. Dobson. 1985. The biology of Canadian weeds: 69. Potamogeton crispus L. Canadian Journal of Plant Science 65(3):655-668.

Integrated Taxonomic Information System. Potamogeton crispus. [Accessed Sep 10, 2014].

Nichols, S.A. and B.H. Shaw. 1986. Ecological life histories of the three aquatic nuisance plants, Myriophyllum spicatum, Potamogeton crispus and Elodea canadensis. Hydrobiologia 131(1):3-21.

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Last Modified: Aug 25, 2018
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