Naiad

Description

Southern Naiad is an annual plant that branches profusely and forms very dense stands of rooted submerged vegetation. Leaves are dark green to greenish-purple, ribbon-like, opposite or in a whorl of three, mostly less than 1/2 inch long and 1/8 inch wide. Single seeds are found encased in the leaf sheath. Naiad reproduces by seeds and fragmentation. Flowers are at the base of the leaves but so small that they can only be observed with magnification.

Mechanical Control

Southern Naiad 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 Naiad:

  1. Use a season long herbicide such as Sonar A.S.. One treatment treats Southern Naiad and many other common pond weeds for the season.
  2. Use a broad spectrum contact herbicide, such as Ultra PondWeed Defense®, will quickly kill Southern Naiad. 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 & died, use a weed cutter & 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

  • 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
  • Hydrothol® Granular Aquatic Algaecide & Herbicide

    Hydrothol® Granular Aquatic Algaecide & Herbicide

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    Fast-Acting Granular Formula Great For Bottom Growing Algae & Chara Control Weeds Surrounding Docks & Shorelines Hydrothol provides rapid-acting contact control for submerged weeds and algae. Hydrothol even works where there is moving water...
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    $119.99
  • Aquathol® Aquatic Herbicides

    Aquathol® Aquatic Herbicides

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