Best Weed Killers for Pond of 2026

The Airmax Shoreline Weed Control is a powerful aquatic herbicide designed to tackle stubborn weeds like cattails, phragmites, and pond grasses in both fresh and brackish water. It helps you restore your shoreline, beach, or dock by killing the roots of persistent emergent weeds, preventing regrowth. Applying it is simple—just mix it in a sprayer and apply directly to the leaves, allowing the treatment to soak in for long-lasting results. You can use this product in various water areas such as lakes, ponds, and canals, giving you flexible options to manage unwanted plants effectively.

Crystal Blue Tsunami DQ Aquatic Herbicide is a concentrated aquatic weed killer for lakes and ponds. It contains 37.3% diquat dibromide, which is effective in controlling hard to kill weeds like duckweed. It is used in 2-8 quarts per surface acre depending on infestation and type of weed. Customers have found it to be an effective solution for stubborn weeds, killing them in one day when applied as directed.

Hi-Yield 2,4-D Selective Weed Killer is a powerful solution for controlling and killing many broadleaf weeds and plants susceptible to 2,4-D. This product can be used on lawns, ponds, drainage ditches, pastures, and rangelands. It pairs great with Hi-Yield Spreader Sticker for increased effectiveness. See the product label for application rates and instructions.

Diquat E-PRO Aquatic Herbicide is a liquid herbicide designed to control weeds and algae in ponds, lakes, commercial greenhouses, nurseries, landscapes, industrial land, recreational land, residential lawns, and public areas. It is formulated with Diquat Dibromide 37.3% and should be mixed at a rate of 1 gallon per surface acre (4' depth) or 32 ounces per 100 gallons when spraying as a commercial weed killer. Customers have found it to be effective for both lake weed control and ground plants, with results seen in as little as a week.

Crystal Blue Aquatic Herbicide is a powerful solution for aquatic weed control. With a 37.3% diquat dibromide formula, it effectively targets both surface and submerged weeds, including tough ones like duckweed. You can use 2-8 quarts per acre based on weed type, and for better results with floating marginal weeds, Plex Mate can be added. This herbicide is ideal for eliminating copper-resistant weeds and provides a convenient way to manage various aquatic plants in lakes and ponds.

ALLIGARE Triclopyr 3 is a powerful weed killer containing 44.4% triclopyr, designed to help you manage unwanted vegetation effectively. This product is ideal for treating areas like ditch banks, wetland sites in production forests, and industrial non-crop zones, making it versatile for various outdoor settings. It’s also safe to use around ponds, lakes, reservoirs, and non-irrigation canals or ditches with minimal water flow. For easy application, simply mix 2 ounces of the herbicide with one gallon of water, allowing you to cover large areas efficiently and maintain your property with less effort.

The Weed Razer Lake Cutter is designed to make pond and lake weed removal easy and efficient for you. Its sharp V-shaped blades cut a wide 48-inch path, letting you clear thick aquatic plants quickly. Weighing only eight pounds, it’s light enough to throw far but sinks fast to cut weeds at their base, making the job less tiring. With a 5-foot handle and a 25-foot rope, you can reach weeds up to 30 feet out into the water, keeping your shoreline and dock clear for swimming, boating, or fishing. Regular use helps you maintain your water area with less effort and no chemicals involved.

The SePRO Sonar RTU Herbicide is designed for easy and effective pond weed control. You don’t need to mix chemicals or use any spray equipment, making it perfect for a simple DIY approach. Just pour the correct amount directly into your pond, saving you time and hassle. This product is safe for fish, pets, and wildlife, so you can treat your pond without worrying about harming the environment. Plus, it’s EPA approved, giving you peace of mind about its safety and effectiveness. With easy dosing instructions, managing aquatic weeds becomes straightforward and stress-free.

Airmax Wipeout Pond Weed Defense is an easy-to-use, all-season treatment for the entire water body. The systemic fluridone herbicide controls submerged and floating pond weeds slowly by reducing their chlorophyll, starving them of nutrients without a rapid oxygen depletion or a fish kill. It is effective on duck weed, water lilies, coontail, fanwort, watermilfoil, American pondweed, bladderwort, curly leaf pondweed, hydrilla, elodea, lily pads, sago pondweed, spatterdock, southern naiad, and other common species. Simply mix treatment with pond water and pour in several spots around the pond's edge to treat the entire body of water in a single application. Enjoy your pond without the hassle of continual treatments.

The Agrisel Fast-Acting Weed Killer is a quick and effective solution for getting rid of tough weeds like chickweed and poison ivy, with visible results in just 1 to 2 days. It works well both in water and on land, making it ideal for ponds, lakes, greenhouses, and gardens. You’ll save money since it requires only a small amount to cover large areas, making it an economical choice. Plus, it’s EPA approved, so you can trust it’s safe for use around aquatic environments and ornamental plants, giving you peace of mind while maintaining your landscape.