Curly Leaf Pondweed

( Potamogeton crispus )

QUICK IDENTIFICATION

  • Aquatic plant, incredibly invasive
  • First pondweed to come up in spring and to die back in mid-summer
  • 2 – 3 inch blue-green leaves; wavy along the edges
  • Leaves stiff and crinkled; approximately 1/2-inch wide and 2 – 3 inches long
  • Height 1 to 3 feet

Weed Pictures

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Weed Information

TypeInformation
ToxicityNon-toxic.
ControlMechanical and herbicide. Contact your County Weed District or local Applicator for more information.
HabitatShallow, deep, still or flowing waters.
RootExtensive and dense root system.
Leaf ShapeOblong with lasagna noodle-like, tiny, ragged edges.
LifespanPerennial; two years or longer.
Priority 2B WeedAbundant in Montana and widespread in many counties.
Similar Looking PlantsClaspingleaf pondweed.
Important InformationThis plant produces small greenish brown pinecone look-a-likes called turions. It forms dense mats in the water and appears reddish-brown in the water, but is actualy green when pulled out of the water.
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