1. Curly Pondweed
Potamogeton crispus

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

3. Location

4. 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

5. 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

6. Growth and Reproduction
Male and female plants have similar growth
Adult size mm
Matures in less than a year
Reproductive season-July
Produces 960 seeds

7. 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

8. Impacts
Aesthetics
Fisheries
Agriculture
Boating
Habitat Changes
Food

9. 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