Call 877-493-7660   M-F 8A-6P ET

Fast, Free Shipping over $95

  • Duckweed Control Pond Treatment

    Duckweed Destroyer Package

    $140.97 - $585.92
    Duckweed Destroyer Pack - Duckweed Control Fast Duckweed Killer Pack includes Cutrine Plus, Harvester, and AquatiStick This "chemical cocktail" is a fast, effective treatment for duckweed, watermeal, and mosquito fern.  This is also...
    $140.97 - $585.92
  • Propeller Aquatic Herbicide

    Propeller 1 lb Aquatic Herbicide

    $119.99 - $140.98
    Propeller Aquatic Herbicide 1 lb (16 oz) Propeller is effective for controlling a broad range of floating, emergent, and submerged pond weeds. Use Propeller to get rid of tough weeds like watermeal and duckweed. Complete kill within 7-14 days...
    $119.99 - $140.98
  • Navigate 2-4D Herbicide for pond weeds

    Navigate Granular Herbicide 50 lb

    $329.99
    Navigate Granular Aquatic Herbicide 50 lb This product is formulated on special heat treated attaclay granules that resist rapid decomposition in water, sink quickly to lake or pond bottoms and release the weed killing chemical into the critical root...
    $329.99
  • Cattail Killer Pack to kill cattails

    Cattail Killer Pack

    $238.97 - $807.93
    Cattail Killer Pack - best chemical to kill cattails Control Cattails and Stands of Phragmites Kills weeds to the roots Perfect for cleaning up shorelines of emergent aquatic weeds Mixture yields faster results than aquatic herbicide alone The...
    $238.97 - $807.93
  • Tsunami DQ Diquat Aquatic Herbicide

    Tsunami DQ Aquatic Herbicide 32oz

    $59.99 - $78.98
    Tsunami DQ Aquatic Herbicide - Pond Weed Killer 32oz treats 5,000 square feet Tsunami DQ is a diquat herbicide designed to target both submerged and floating pond weeds. This is a broad spectrum, non selective herbicide that is designed for aquatic use...
    $59.99 - $78.98
  • Tsunami DQ Diquat Aquatic Herbicide

    Tsunami DQ Aquatic Herbicide 1 gallon

    $159.99 - $201.97
    Tsunami DQ Aquatic Herbicide - Pond Weed Killer 1 gallon treats 20,000 square feet Tsunami DQ is a diquat herbicide designed to target both submerged and floating pond weeds. This is a broad spectrum, non selective herbicide that is designed for...
    $159.99 - $201.97
  • clearcast herbicide for cattail control

    ClearCast Aquatic Herbicide 8 oz

    $69.99 - $88.98
    Clearcast Herbicide for Aquatic Weed Control Clearcast aquatic herbicide is the perfect remedy for overgrown shoreline weeds and emergent aquatic weeds disrupting the ecosystem of a pond. Cattails do not re-grow Use any time of year Can be used on...
    $69.99 - $88.98
  • Sonar RTU Pond Herbicide

    Sonar RTU Aquatic Herbicide 32 oz

    $139.99
    Sonar RTU (Ready To Use) Aquatic Herbicide Sonar RTU is a systemic aquatic herbicide formulated for long term control of aquatic weeds. Slow reaction time makes this pond treatment safe for fish. Sonar RTU is an ideal solution for homeowners...
    $139.99
  • Plex Mate Surfactant 1 Gallon

    Plex Mate Surfactant 1 gallon

    $59.99
    Plex Mate Surfactant - Herbicide and Algaecide Treatment Enhancer Plex Mate is a surfactant that is used to increase the effectiveness of aquatic herbicide and algaecide treatments. Plex Mate aids your chemical stick to the targeted pond weeds. Adding a...
    $59.99
  • Aquathol Pond Herbicide

    Aquathol K- 1 gal Aquatic Herbicide

    $179.99 - $200.98
    Aquathol K Aquatic Herbicide Treatment  Broad Spectrum Contact Herbicide for Submerged Weed Control. This aquatic weed killer will kill vegetation to the roots. A great treatment choice for turbid water with excess organics Spray on actively...
    $179.99 - $200.98
  • Clearcast glyphosate alternative

    ClearCast Aquatic Herbicide 32 oz

    $169.99 - $207.97
    Clearcast Herbicide for Cattail Control Clearcast aquatic herbicide is the perfect remedy for overgrown shoreline weeds and emergent aquatic weeds disrupting the ecosystem of a pond. Cattails do not re-grow Use any time of year Can be used on...
    $169.99 - $207.97
  • Pond Herbicide Sprayer

    Pump Sprayer 3 gallon capacity

    $53.99
    Pond Weed & Algae Sprayer - 3 gallon Pump Sprayer In order to effectively apply most liquid aquatic herbicides and algaecides, you need to disperse the solution via sprayer. Spray weeds in the areas where they are actively growing. Pour chemical...
    $53.99
  • Harvester aquatic herbicide

    Harvester Aquatic Herbicide 1 gallon

    $159.99
    Harvester Aquatic Herbicide - Pond Weed Killer Harvester is a diquat aquatic herbicide designed to target both submerged and floating pond weeds. This is a broad spectrum contact herbicide that is designed for aquatic use.  1 gallon treats 20,000...
    $159.99
  • Aquathol Super K Pond Herbicide

    Aquathol Super K- 10 lb Aquatic Herbicide

    $399.99
    Aquathol Super K Aquatic Herbicide Broad Spectrum Granular Aquatic Herbicide- Submerged Weed Control A great treatment choice for plants growing in deeper water Broadcast over actively growing plants 10lbs treats up to 12,500 square...
    $399.99
  • AquatiStick Aquatic Surfactant 32 oz

    AquatiStick Aquatic Surfactant 32 oz

    $20.99
    AquatiStick Aquatic Surfactant 32 oz Increases effectiveness of aquatic herbicide application Adjuvant, sticking agent AquatiStick is a non ionic surfactant for aquatic use. This is not a stand alone treatment. AquatiStick is meant to be mixed...
    $20.99
  • Sonar AS Pond Herbicide

    Sonar AS Aquatic Herbicide 8 oz

    $319.99
    Sonar AS Aquatic Herbicide for long-term control  Sonar A.S. is a systemic aquatic herbicide formulated for long term control of aquatic weeds. Slow reaction time makes this pond treatment safe for fish. Sonar A.S. is an ideal solution for managing...
    $319.99
  • Sepro MSO surfactant for use with Clearcast

    MSO Surfactant 8 oz

    $18.99
    MSO Surfactant herbicide enhancer 8 oz MSO stands for methylated seed oil which is the active ingredient in this adjuvant. This liquid is not a stand alone treatment. It is meant to be mixed with Clearcast or other Imazamox or Imazapyr aquatic herbicide...
    $18.99
  • Harvester diquat dibromide

    Harvester Aquatic Herbicide 32 oz

    $80.98
    Harvester Aquatic Herbicide - Pond Weed Killer Harvester is a diquat aquatic herbicide designed to target both submerged and floating pond weeds. This is a broad spectrum contact herbicide that is designed for aquatic use.  32oz treats 5,000...
    $80.98
  • Propeller Flumioxazin Herbicide

    Propeller 5 lb Aquatic Herbicide

    $589.99
    Propeller Aquatic Herbicide 5 lb Propeller is effective for controlling a broad range of floating, emergent, and submerged pond weeds. Use Propeller to get rid of tough weeds like watermeal and duckweed. Complete kill within 7-14 days.  Use...
    $589.99

Shop herbicides that are registered and safe for aquatic use to control hydrilla, cattail, duckweed, american pondweed, alligator weed, sago pondweed, milfoil, lily pad, phragmites and other nuisance aquatic weeds.

How to kill ponds weeds

To effectively kill pond weeds, you can use an aquatic herbicide specifically designed for this purpose. Here are some steps to follow:

  1. Identify the type of pond weed you are dealing with. Different types of pond weeds may require different treatment methods. Check out our weed identification page here.
  2. Calculate the pond treatment area. Measure out the square footage of the target treatment area. Be sure to read label instructions. Some dosage rates are based on surface area, others are volume based, per acre foot, which takes depth of growth into account.
  3. Choose an appropriate aquatic herbicide. Look for a product that is labeled for use in ponds and specifically targets the type of weed you are trying to eliminate.
  4. Apply the herbicide according to the instructions. This often involves diluting the herbicide in water and spraying it directly onto the weeds or using a granular form that can be spread over the water surface. Apply early on a sunny day for best results
  5. Consider preventive measures. Once you have successfully killed the pond weeds, it's important to take preventive measures to minimize their return. This may include regular maintenance, such as apply pond dye and apply beneficial bacteria to break down dead vegetation

How long after herbicide application do you see results

After applying aquatic herbicide for pond weeds, the time it takes to see results can vary depending on several factors. These factors include the type of herbicide used, the specific type of pond weed being targeted, and the environmental conditions.

With fast acting aquatic herbicides like Tsunami diquat, Propeller flumioxazin or Aquathol endothall, results are seen within days of application. For systemic pond herbicides like Sonar fluridone or Navigate 2, 4-D results may take weeks. However, it's important to note that complete eradication of the pond weeds may take longer. Some herbicides work by inhibiting the growth of the weeds, causing them to gradually die off over time. This process can take weeks or even months.

Additionally, the effectiveness of the herbicide can be influenced by factors such as water temperature, sunlight exposure, and the overall health of the pond ecosystem. Warmer temperatures and ample sunlight can accelerate the herbicide's action, while colder temperatures and limited sunlight may slow down the process.

How to improve aquatic herbicide effectiveness

To improve the effectiveness of herbicides in killing pond weeds, consider the time of year, weather conditions, and additives to improve effectiveness.

Apply herbicide during optimal conditions: The effectiveness of herbicides can be influenced by environmental factors. Apply the herbicide during a time when the target weeds are actively growing and vulnerable. Avoid applying herbicides during periods of heavy rain or when the water temperature is too low, as this can reduce their effectiveness.

Mix pond herbicide with surfactant: Most herbicides benefit from the use of surfactants, which are substances added to the herbicide mixture to enhance its effectiveness. Surfactants, commonly called a "sticker" can improve herbicide absorption, spread, and penetration into the target weeds.