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Curly Pondweed Potamogeton crispus

Curly Pondweed Potamogeton crispus. Paul P. Dunay III Keystone College ENVT 315 Fall 2012. Distribution in United States and Canada. Introduction. Native to Eurasia, Africa, Australia Possibly introduced as an aquarium ornamental or accidentally Introduced into U.S in mid-1800s

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Curly Pondweed Potamogeton crispus

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  1. Curly PondweedPotamogetoncrispus Paul P. Dunay III Keystone College ENVT 315 Fall 2012

  2. Distribution in United States and Canada

  3. Introduction • Native to Eurasia, Africa, Australia • Possibly introduced as an aquarium ornamental or accidentally • Introduced into U.S in mid-1800s • Noxious or prohibited weed in several areas of the USA: AL, CT, WA, VT

  4. Plant Identification • Potamogetonaceae • Leaves are typically finely serrated along the edges • Edges of mature leaves may be distinctly ruffled • Unique vein pattern • Inconspicuous flowers with four petal-like lobes on spikes

  5. Characteristics • Submerged plant species • Fast growing perennial • Grows well in sandy, loamy and clay soils • Cold-tolerant evergreen and will grow through winter • Low-light adapted • Established early and either avoids competition or out-competes other macrophytes

  6. Control Measures • Turions are easily transportable and can remain dormant for up to 2 years • Mechanical harvesting may be used to obtain some nuisance relief • P. crispusis sensitive to 2,4-D, especially during early spring • The herbicides fluridone and diquat have also been used

  7. References • USDA - http://www.invasivespeciesinfo.gov • USDA Plants - http://plants.usda.gov • Invasive Species Compendium - http://www.cabi.org

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