curly pondweed potamogeton crispus n.
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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

Curly PondweedPotamogetoncrispus

Paul P. Dunay III

Keystone College

ENVT 315

Fall 2012

introduction
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
plant identification
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
characteristics
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
control measures
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
references
References
  • USDA - http://www.invasivespeciesinfo.gov
  • USDA Plants - http://plants.usda.gov
  • Invasive Species Compendium - http://www.cabi.org