Best Weed Killers for Pond of 2025

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.

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.

Airmax Weed Control is a powerful herbicide designed to tackle tough aquatic weeds like cattails and phragmites. With its broad-spectrum formula, you can effectively reclaim your shoreline or dock area. This product penetrates deep into the roots of persistent plants, ensuring they don’t return. It's easy to use—just mix it in a tank sprayer and apply directly to the leaves. Additionally, it provides long-lasting control in various water bodies, including lakes and ponds, without harming aquatic life when used as directed.

Airmax Ultra Pondweed Defense Aquatic Herbicide is a contact herbicide that controls submerged pond weeds and fast-acting results. It comes in a 1-quart bottle that can treat up to 5,000 sq ft. Customers have noted its effectiveness in controlling aquatic weeds, American Pondweed, and duckweed, though some have noted difficulty in mixing and instructions not being clear.

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.

Weedtrine D Aquatic Herbicide is a non-volatile herbicide that controls various types of submersed, floating, and emergent weeds in ponds, pools, fountains, and other water sources. It is easy to apply and quickly dilutes in water. However, it requires a surfactant when used with any weed on or above the water surface. It is not suitable for water used for irrigation, drinking, or swimming.

Agrisel Weed Killer is a fast-acting solution for aquatic and landscape weeds. You'll see visible results in just 1-2 days, making it perfect for tackling stubborn weeds like chickweed and poison ivy. This versatile product can be used in ponds, lakes, greenhouses, nurseries, and landscapes. It's cost-effective with low usage rates, making it ideal for both small and large areas. Agrisel Weed Killer is EPA approved, ensuring it meets standards for various applications, including aquatic settings and ornamental gardens.

Agrisel Aqua-Sel Weed Killer is a powerful solution for aquatic weed control. With its broad-spectrum systemic formula, it effectively targets and eliminates emerged weeds in lakes, rivers, and ponds. This product offers a cost-effective solution by requiring a low application rate, saving you time and money. Its user-friendly liquid formulation makes mixing and spraying a breeze, simplifying your maintenance tasks. Rest assured, this herbicide is EPA approved for various aquatic applications, ensuring safety for both users and aquatic environments.

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.

The YIVIKPE Weed Tiller is designed for efficient pond and lake maintenance. With six durable stainless steel blades, this tool resists rust and corrosion, ensuring longevity. You can quickly assemble it in just 4-6 minutes, thanks to the preinstalled blades and clear instructions. Its U-shaped construction offers stability during use, so you won't have to worry about it bending or shifting. Additionally, the quick outlet holes allow for easy water and sand drainage, enhancing your experience while working in wet environments.