Common Name: Curly-leaf pondweed

Scientific Name: Potamogeton crispus

Native Range: Europe, Africa, Australia

Biology & Description:

Curly-leaf pondweed (Potamogeton crispus) is a submerged perennial that resembles many native pondweeds. Care must be taken to correctly identify this species. Rigid, reddish-green, oblong leaves have distinct, finely toothed, wavy edges. The plant’s flat, reddish-brown stem grows in water depths from 1-16 feet. Most reproduction is from winter buds, called turions.

Distribution:

NOTE: If you receive a "sign in" message, click cancel to continue. Confirmed observations of Curly-leaf pondweed submitted to the NYS Invasive Species Database. For more information, visit iMapInvasives

Habitat:

Curly-leaf pondweed is tolerant of low light and low water temperatures. It invades both shallow and deep water.

Threats & Impacts:

New plants form under ice cover during late winter, making curly-leaf pondweed one of the first plants to emerge in early summer. Plant die-offs in midsummer may cause a critical loss of oxygen.

Management Techniques:

Control methods for curly-leaf pondweed include physical, mechanical, or chemical techniques. There are many native look-alike pondweeds. Please confirm identification before beginning any management program.

Additional Resources:

• APIPP Invasive Species Best Management Practices