COMMON NAME:Curly-leaf pondweed
SCIENTIFIC NAME:Potamogeton crispus
ORIGIN:Europe, Africa, and Australia
DESCRIPTION: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.
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
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.
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: