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®, will work to kill the root of the plant.
  2. Use a broad spectrum contact herbicide, such as Ultra PondWeed Defense®, will quickly kill water lettuce. 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.
  • Take a proactive approach to pond management. Use PondClear, MuckAway and Pond Dye to keep your pond looking great. For more information, see our article on the Airmax® Ecosystem

Ask an Expert

If you are unable to identify your pond weed(s) using our Weed ID Guide, follow this article to email us a photo.

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Products

  • Valent® Clipper™ Aquatic Herbicide

    Valent® Clipper Aquatic Herbicide

    Review star icon Review star icon Review star icon Review star icon Review star icon
    Fast & Selective Control Of Weeds Treats Floating & Submerged Weeds Dissipates Quickly Through Water Column Valent ® Clipper ™ Aquatic Herbicide delivers fast and selective control of tough invasive and nuisance plants such as...
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    $229.99–$899.99
  • Pond Logic® Shoreline Defense®

    Pond Logic® Shoreline Defense®

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    Broad Spectrum Emergent Weed Killer Kills To The Roots Long Term Control Of Cattails Kill the roots of even the most persistent emergent aquatic weeds & grasses. Pond Logic ® Shoreline Defense ® is great for controlling cattails or any...
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    $39.99–$129.99
  • Pond Logic® Ultra PondWeed Defense® Aquatic Herbicide

    Pond Logic® Ultra PondWeed Defense® Aquatic Herbicide

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    Broad Spectrum Pondweed Control Fast Acting Liquid Formula Short Term Control Of Duckweed Pond Logic ® Ultra Pondweed Defense ® works on pond weeds including submerged, floating and emergent weeds. It may be used for short term control of...
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    $49.99–$149.99