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Curly-leaf Pondweed
COMMON NAME:
Curly-leaf pondweedSCIENTIFIC NAME:
Potamogeton crispusORIGIN:
Europe, Africa, and AustraliaDESCRIPTION:
Curly-leaf pondweed 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 from 1-16 ft. Most reproduction is from winter buds, called turions.HABITAT:
Curly-leaf pondweed is tolerant of low light and low water temperatures, and invades shallow and deep waters.THREAT:
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 mid-summer may cause a critical loss of oxygen.MANAGEMENT:
Control methods for curly-leaf pondweed have included physical, mechanical or chemical techniques. There are many native look-alike pondweeds. Please confirm identification before beginning any management program.
WNY PRISM PRIORITY:
Tier 4 - Local Control
ADDITIONAL RESOURCES:
Curly-leaf pondweed is a prohibited species in New York State - for more information on Prohibited and Regulated Species, visit http://www.dec.ny.gov/animals/99141.html.
Native Alternatives
Clasping-leaved pondweed (Potamogeton perfoliatus)
Ivy-leaf duckweed (Lemna trisulca)
Large-leaf pondweed (Potamogeton amplifolius)
NYS Prohibited and Regulated Species - Part 575:
PATHWAYS OF INVASION:
REGIONAL DISTRIBUTION:
Widespread
MAP (via iMapInvasives):
This map shows confirmed observations (green points) submitted to the NYS Invasive Species Database. Absence of data does not necessarily mean absence of the species at that site, but that it has not been reported there. For more information, please visit iMapInvasives.