Curly-Leaf Pondweed

Curly-leaf Pondweed

(Potamogeton crispus)
*Detected in Michigan*

Report this species:

Use the Midwest Invasive Species Information Network (MISIN) online reporting tool 

- Or - download the MISIN smartphone app and report from your phone -



  • Leaves are dark green with wavy, serrated margins
  • Submersed, perennial herb with thick roots
  • Can reach 2 meters in length
  • Flowering spike grows above water’s surface
  • Starts growing in fall and winter, flowers in late spring, dies in late July

 curly pondweed
Leslie J Mehrhoff University of Connecticut

curly pondweed
Chris Evans Illinois Wildlife Action Plan

Habitat: Curly-leaf pondweed inhabits ponds, lakes, and slow moving streams. Brackish, alkaline, or eutrophic conditions less than 3 meters in depth are preferable, although it can grow in waters up to 12 meters deep.

Native Range: Europe, Asia, Africa, Australia

U.S. Distribution: Unfortunately, curly-leaf pondweed has established itself in all of the continental U.S. except for Maine and South Carolina.

Local Concern: As with many invasive species, curly-leaf pondweed out-competes native aquatic plant species and reduces diversity. Dense colonies can hinder fish movement as well as recreational activity.


Curly-leaf Pondweed Invasive Species Alert - Printable PDF

Status and Strategy for Curly-leafed Pondweed Management This document provides in-depth information about Curly-leafed Pondweed in the State of Michigan including identification, distribution, management, and control options.

MDARD Weed Risk Assessment for Curly-leaf Pondweed (Potamogeton crispus) - This document evaluates the invasive potential of the plant species using information based on establishment, spread and potential to cause harm.