Curly Pondweed

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Curly Pondweed

• Potamogeton crispus

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Basics of Curly Pondweed

• Submersed aquatic vegetation
• AKA Curly Leafed Pondweed, Curled-Leafed
  Pondweed, or Crisped Pondweed

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Location
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History

• First recorded in Chesapeake Bay in 1874
• Found as native vegetation in Eurasia, Africa and
  Australia
• Believed to be introduced through shipping
  practices or ornamental planting
• Probably spread by waterfowl or planted as food
  for wildlife

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Habitat

• Primary
• Fresh water tidal and non-tidal areas
• Grass beds
• Secondary
• Salt or brackish marsh
• Prefers cool waters
• Stagnant or flowing
• Shallow or deep

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Growth and Reproduction

• Male and female plants have similar growth
• Adult size 300-800mm
• Matures in less than a year
• Reproductive season-July
• Produces 960 seeds

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Growth and Reproduction

• Dies in summer with rising water temperatures
• Over summers as turion
• Turions germinate in late summer to fall
• Immature plants survive winter

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Impacts

• Aesthetics
• Fisheries
• Agriculture
• Boating
• Habitat Changes
• Food

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Control

• Biological
• Wildfowl and grass carp
• Mechanical
• Raking or seining
• Algal blooms or non-toxic dyes
• Chemical
• Sonar (liquid AS or Sonar Q)
• Aquathol Super K Granular

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