Shoreline Weeds

Shoreline Weed Control Guide


Shoreline weeds, such as Rushes or varying types of nuisance grass can thrive in or near bodies of water. They can provide habitat for wild birds and other smaller animals as well as nesting cover for fish. As beneficial as these plants are for the ecosystem, excessive shoreline weeds can become a nuisance. If not controlled, these plants will create a thick colony that can interfere with water flow, swimming, recreation as well as reduce plant diversity. 


Shoreline weeds can spread quickly through seeds blown by the wind or carried by animals or by their expanding rhizomes, which are horizontal stems growing underground. Early intervention and management to avoid large invasions is the best prevention.

Physical/Mechanical Control

Cut plants just below the surface of the water using an Aquatic Weed Eradicator (A.W.E.) and be sure to remove the plants using a Lake Rake to keep dead vegetation from adding to excessive nutrients in the water body. Cut back new growth every time it emerges above the water.  Using a shovel to dig plants out of the pond or soil is a good option in smaller areas to reduce the possibility of unwanted weeds becoming too established. Physical control is difficult because plants can reestablish from seeds and remaining roots; however, when used in conjunction with chemical control methods it will maximize success.

Chemical Control

Aquatic herbicides can be safe and effective management tool when physical control doesn't provide complete control. The product that has been very successful in treating a wide range of shoreline weeds is Shore-Klear mixed with a nonionic surfactant such as Cygnet Plus. When Mixed in a solution and applied directly to unwanted shoreline weeds, this combination of products will kill a broad range of unwanted weeds around your pond or lake frontage.

Shore-Klear is a systemic broad range herbicide that will translocate down into the root systems killing the plant entirely. Successful shoreline weed management in heavily infested areas can take several applications and some spot treatments as an annual maintenance.

Cygnet Plus is a nonionic spray adjuvant, wetting agent, sticker, activator and penetrant all in one. Cygnet Plus increases the effectiveness of herbicides uptake into the plant tissue. It is recommended for use with any liquid herbicide or algaecide application.