American Pondweed

Description

American Pondweed is a perennial plant that has both floating and a few submerged leaves in an alternate pattern. The floating leaves are elliptical to oval 4 to 7 inches long and 1 to 2 inches wide on long petioles. Submerged leaves are not abundant and are blade-like, somewhat transparent and smaller than floating leaves. American Pondweed's fruits are on spikes that often stand above the water's surface and are brownish to reddish in color, 2 to 3 inches long and 1/8 to 1/4 inches wide.

Mechanical Control

American Pondweed can be removed by cutting and raking from the pond. It will regrow from remaining roots and seeds.


Pond Dye can be used to limit sunlight into the pond. With reduced sunlight, photosynthesis cannot occur so growth will be stunted.

Chemical Control

There are several options to control American Pondweed.

  1. Use a season long herbicide such as Sonar™ A.S.. One treatment treats American Pondweed and many other common pond weeds for the season.
  2. Use a broad spectrum contact herbicide, such as Ultra PondWeed Defense®, will quickly kill American Pondweed. 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 or 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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Products

  • 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
  • Aquathol® Aquatic Herbicides

    Aquathol® Aquatic Herbicides

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    Eliminate Submerged Weeds Available in Liquid or Granular Formulas Great For Use In Turbid Ponds Aquathol® effectively eliminates a wide variety of submerged weeds. As potency is unaffected by surrounding organics, Aquathol® is a great...
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    $139.99–$329.99
  • Hydrothol® 191 Granular Aquatic Algaecide & Herbicide

    Hydrothol® 191 Granular Aquatic Algaecide & Herbicide

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    Fast-Acting Granular Formula Great For Bottom Growing Algae & Chara Control Weeds Surrounding Docks & Shorelines Hydrothol-191 provides rapid-acting contact control for submerged weeds and algae. Hydrothol-191 even works where there is...
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    $119.99
  • SePRO Sonar™ A.S. Aquatic Herbicide

    SePRO Sonar A.S. Aquatic Herbicide

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    Season Long Weed Control Treats Floating & Submerged Weeds Systemic Herbicide That Kills Roots Even the most persistent weeds don't stand a chance against Sonar™. SePRO Sonar™ A.S. Aquatic Herbicide can be used to control stubborn...
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    $239.99–$2,399.99
  • Valent® Clipper™ Aquatic Herbicide

    Valent® Clipper Aquatic Herbicide

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    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
  • SePRO Total Pond - Prevent®

    SePRO Total Pond - Prevent®

    Prevent & Control Weeds All Season Systemic Herbicide That Kills Roots Easy-To-Apply Granular Formulation SePro Total Pond - Prevent ® controls a wide variety of submerged and floating aquatic vegetation with a single treatment. Prevent...
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    $84.99
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