*Detected in Michigan*
RESTRICTED IN MICHIGAN
- 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
Leslie J Mehrhoff University of Connecticut Bugwood.org
Chris Evans Illinois Wildlife Action Plan Bugwood.org
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.
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 (Potamogaton crispus) - This document evaluates the invasive potential of the plant species using information based on establishment, spread and potential to cause harm.