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Copper Herbicides

Copper has been used as an aquatic herbicide and algaecide since 1950. Copper compounds for aquatic use are manufactured either as copper sulfate, or as a copper chelate. Both forms contain metallic copper as the active ingredient, but in the chelate forms the copper is combined with other compounds to keep the copper in solution and active in the water longer. Chelated copper is also less toxic to non-target organisms.

Aquatic Use and Considerations

Copper products are primarily used to treat algae but certain formulations will affect some plants, as well. The target species vary by product, so it is important to confirm that the intended target is listed on the label of the product being used.

Copper works by interfering with enzyme production. Results from treatments for algae occur within hours, while the effects of treatment on plants will be evident in about a week. Large-scale algae die-off can deplete oxygen levels in the water quickly, which can be lethal to fish and other aquatic life. If more than a 1/3 of the total water area is covered in algae, treatments should be done in sections, and applied in a pattern that allows fish an escape route to untreated water. Ten to fourteen days are needed between treatments to protect fish and aquatic life.

Copper products will treat blue-green (freefloating) algae and filamentous (mat-forming) algae as well as larger algae species that look like plants, such as Chara spp. and Nitella spp.. In Wisconsin, copper is not typically used to treat aquatic plants, but some are labeled to treat the invasives Eurasian watermilfoil (Myriophyllum spicatum) and curly-leaf pondweed (Potamogeton crispus), as well as the native species coontail (Ceratophyllum demersum), naiads (Najas spp.), elodea (Elodea canadensis), sago pondweed (Stuckenia pectinata) and water celery (Vallisneria americana).

Product Recommendation:

AquaSticker is a biological adjuvant that can improve your copper algaecides and herbicides performance by 40%

Shoreline Knowledge Base Biology and Control of Aquatic Plants

Biology and Control of Aquatic Plants  
Copper Compounds Chemical Fact Sheet

Note: Products may not be registered for use in your state or locale. Check to be sure a specific use pattern is approved in your area before use. Check product labeling or your local state agency for more information. Most current product labels are available by visiting the product manufacturers website or at https://www.cdms.net

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Cutrine Plus Algaecide Aquatic Herbicide, Applied Biochemists

Cutrine-Plus Algaecide is one of the most popular algaecides on the market today. It is a double-chelated copper solution effective against a wide variety of algal species. Due to its double-chelate it stays in the water column longer, and in combination with its greater amount of activity in the plant can be much more effective.

Active Ingredient: Copper Ethanolamine Complex 27.9%

EPA Signal Word - CAUTION / PRECAUCION

From $43.95

Cutrine Plus Granular Algaecide Aquatic Herbicide, Applied Biochemists

Cutrine-Plus Granular Algaecide is one of the most popular algaecides on the market today. It is a double-chelated copper solution effective against a wide variety of algal species. Due to its double-chelate it stays in the water column longer, and in combination with its greater amount of activity in the plant can be much more effective.

Active Ingredient: Copper as elemental 3.7%

Signal Word - CAUTION/CAUCION

In stock, ships within 24 hours.

From $51.95

Cutrine Ultra Algaecide Aquatic Herbicide, Applied Biochemists

Cutrine Ultra Algaecide Aquatic Herbicide is a chelated copper formulation containing an emulsified surfactant/penetrant combination for highly effective control of coarse (thick cell-walled) filamentous algae, musciaginous (colonial) planktonic algae, Chara and copper-sensitive vascular aquatic plants.

Active Ingredient: Copper as Elimental 9.0%

Signal Word - DANGER/PELIGRO

In stock, ships within 24 hours.

From $119.95

Komeen Aquatic Algaecide Herbicide, SePRO

Komeen Aquatic Algaecide Herbicide controls aquatic weeds such as Hydrilla, Egeria and Southern Naiad that can render waterbodies on golf courses, parks and private property unsightly and unusable. Komeen provides consistent and reliable control of these nuisance weeds and more in a wide variety of application situations.

Active Ingredient: Copper Ethylenediamine Complex 22.9%

Signal Word - WARNING/AVISO

In stock, ships within 24 hours.

From $123.95

Komeen Crystal Aquatic Herbicide, SePRO

Komeen Crystal Aquatic Herbicide for use in slow-moving or quiescent bodies of water including: golf course, ornamental, fish, and fire ponds.

Active Ingredient: Copper Ethylenediamine Complex 50.0%

Signal Word - DANGER/PELIGRO

In stock, ships within 24 hours.

From $275.95

K-Tea Aquatic Algaecide Herbicide, SePRO

K-Tea Aquatic Algaecide is the best choice for eliminating standing or slow-moving water of unsightly and troublesome planktonic and filamentous algae. Enjoy the performance and application flexibility K-Tea offers as well as the minimum restrictions for its use on a broad spectrum of algae, including Cyanophyceae (blue-green), Chlorophyceae (green), Diatomaceae (diatoms), and Protozoa (flagellates).

Active Ingredient: Copper Treethanolamine 26.7%

EPA Signal Word - CAUTION / PRECAUCION

From $87.95

Nautique Aquatic Herbicide, SePRO

Nautique Aquatic Herbicide is a fast-acting, economical herbicide that provides localized control of nuisance and exotic plants with no use or irrigation restrictions and minimal risk to the environment.

Active Ingredient: Copper Ethylenediamine Complex 13.2% and Copper Triethanolamine Complex 14.9%

EPA Signal Word - DANGER / PELIGRO

From $137.95

SeClear Aquatic Algaecide, SePRO

SeClear Aquatic Algaecide, A better technical, operational and economical solution for algae management and water quality improvement.

Active Ingredient: Copper Sulfate Pentahydate 16.2%

EPA Signal Word - CAUTION / PRECAUCION

From $75.95