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Take your Pond Back from Aquatic Weeds

Camille Landry posted this on Nov 28, 2016

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Aquatic weeds are actually beneficial to your pond, providing many benefits such as natural filtration, food and habitat for fish. However, when aquatic weeds grow in excessively large amounts they can be more than just an eyesore. Lack of treating these weeds can result in them becoming a nuisance. Aquatic weeds have been known to disrupt boat access and often gets in the way of fun recreational activities like swimming and fishing. Effectively managing growth before it gets out of control will prevent weeds from taking over your pond and making it look unattractive.


Here at Solutions we can help you to figure out how to tackle this issue with our free helpful guides that complement our aquatic herbicide products along with convenient customer service experts who are standing by to help you whenever you need it. For dealing with aquatic herbicides and the weeds that they treat, it’s best to have little knowledge before taking action.


Step 1 Identify the Problem Weed


To effectively manage aquatic weed growth it is essential to first identify the target weed. Aquatics Weed can be separated into three groups. These include floating weeds, submerged weeds and emergent weeds.


Floating weeds such as water lillies, hyacinth and duckweed may be free-floating or rooted with the majority of the plant resting on the pond surface


Submerged weeds such as curly pondweed, milfoil and coontail are rooted in the ponds bottom. Some of the growth may reach the pond surface but the majority of the plant remains underwater due to their soft stem.


Emergent weeds such as cattails and phragmites are rooted in the pond but have a strong stem allowing growth above the pond surface.


Step 2 Treatment Options


Once you’ve identified the target weed the next step is to select the treatment method to manage the growth. Liquid herbicides are a great solution because they attack weed growth in shallow water on or above the ponds surface and can be spread evenly with a pump sprayer.


Granular herbicides are best utilized when weeds are submerged as blankets under the water surface, in deep areas of the pond or in ponds with flowing water. These heavier granules can be applied with a hand spreader and will sink directly onto the weed beds.


To help with selecting a herbicides it is always good to know the size of the treatment area where the target weeds are growing. It’s also important to know whether the pond is used for swimming irrigation or drinking and some herbicides have temporary water use restrictions.


Most herbicides are effective on a wide range of aquatic plants. For assistance when selecting the best herbicide for your pond it may be helpful to refer to our online DIY guides at Solutionsstores.com or contact us directly via email at askapro@solutionsstores.com or calling our customer service line at 1(800) 479-6583.


Step 3: Herbicide Application


In order for herbicide application to be most effective, follow these guidelines:

  • Treat only actively growing weeds. The target weed must be present and actively growing in the pond for the treatment to be effective.

  • Treat during ideal weather. Though weeds can also grow in colder temperatures, pond water must be above 50 degrees fahrenheit to be controlled by herbicide treatment. Treatments are most effective on a warm, sunny day when rain is not expected in the immediate forecast, this allows for adequate absorption time.

  • Treat only ⅓ of the pond at a time. During hot weather as weeds die off, they can reduce the amount of available oxygen in the pond. Treat your pond in small sections waiting 10 to 14 days in between treatments to ensure fish have an oxygen-rich environment. We always recommend to keep an aeration system or fountain running during treatment.

  • Always read the product label for appropriate protective equipment and application rates. Pay special attention to cautions regarding the treatment of ponds used for irrigation drinking and swimming or ponds with fish such as trout or koi.


Herbicides are a great tool but do not address the actual problem of excessive nutrients and organic materials. Following up with proactive pond management practices such as aeration and natural water treatments will reduce the accumulation of dead organic material and can help keep your water clear for seasons to comes.


For more information keep a close eye on upcoming how-to-guides and informative materials that are posted up on our website regularly. If you need help with weed identification or would like more information on choosing the right product, dont hesitate to call up our experts or email us at askapro@solutionsstores.com, email us photos of the pond and aquatic weeds and one of our pond experts will identify the target weed and help you choose the right product.



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