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Water Lettuce

Description

Water Lettuce is a non-native, perennial plant. It is free floating with green, velvety leaves. The leaves range in size from 1" - 6".

Mechanical Control

Water Lettuce can be controlled by raking or skimming it off the pond's surface.

Chemical Control

There are several options to control Water Lettuce.

  1. Use a systemic herbicide, such as Shoreline Defense® or Kraken™, will work to kill the root of the plant. Shoreline Defense® is a broad spectrum herbicide, while Kraken™ is a selective herbicide.
  2. Use a broad spectrum contact herbicide, such as Ultra PondWeed Defense®, will quickly kill duckweed. Because it does not stay in the water body, multiple treatments may be needed throughout the season.
  3. Use Clipper™, a fast and selective herbicide that controls tough invasive and nuisance aquatic plants.

Chemical Application Best Practices

Anytime you use chemicals treat weeds and algae, please keep in mind the following:

  • Treat your pond in sections. Treat only half the pond's surface at a time, if the weather is hot, only treat 1/4-1/3 of your pond. Wait 10-14 days between treatments.
  • Once the weeds have browned, use a rake to remove as much dead material as possible. This prevents an accumulation of dead plant material and muck.
  • Treat your pond with the proactive approach to pond management. Use PondClear™, MuckAway™ and Pond Dye to keep your pond looking great.

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