Curly Pondweed Potamogeton crispus

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

Location

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

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

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

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

Impacts Aesthetics Fisheries Agriculture Boating Habitat Changes Food

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