Shoreline Defense

Broad Spectrum Aquatic Herbicide

Treats Cattails, Grasses & Phragmites
Kills Weeds Down to the Roots
Great for Beaches and Shorelines

Cannot be shipped to: AK, AZ, CA, CT, DC, HI, ME, NJ, NY, PR, RI, VT, WA

Please select an option.

  • 32 Ounce
  • Item: 530157
  • $62.49
  • 1 Gallon
  • Item: 530167
  • $187.49


Shoreline Defense works on emergent aquatic weeds, including cattails and phragmites, and other shoreline vegetation. Shoreline Defense kills weeds down to their roots. For best results, apply Shoreline Defense while the chosen weed is in its active growing stage. For cattails, it is best to apply during late summer to early fall.

Reactive treatments such as algaecides, herbicides, and mechanical tools can help control unwanted weeds or algae and are a key step in the Airmax Ecosystem, a simple 3 step approach to pond and lake management. The Airmax Ecosystem is the industry-leading method to achieve a clean, clear, thriving aquatic ecosystem. Learn more about the Airmax Ecosystem.



Video - Shoreline Defense
Video - Airmax Ecosystem
Weed Control
Airmax Ecosystem
Product Label - 32 Ounce
Product Label - 1 Gallon

Weeds Treated

Creeping Water Primrose

Purple Loosestrife
Alligator Weed
Shoreline Grasses

Lily Pads

Water Lettuce
Water Hyacinth
Water Shield


How to Use

Shoreline Defense 32 Ounce Shoreline Defense 1 Gallon
32 Ounce
1 Gallon
Application Liquid Liquid
Temperature Restriction None None
Square Footage Per Container Up to 10,000 Square Feet Up to 40,000 Square Feet
Shelf Life 2-Years 2-Years


Treatment Area
Shoreline Defense
Treatment Booster Plus
2,500 Square Feet 8 Ounce 2 Gallon 4 Ounce
5,000 Square Feet 1/2 Quart (16 Ounce) 4 Gallon 8 Ounce
7,500 Square Feet 3/4 Quart (24 Ounce) 6 Gallon 12 Ounce
10,000 Square Feet 1 Quart (32 Ounce) 8 Gallon 16 Ounce

Please note: Above are recommendations. Always read the product label.


Shoreline Defense should be applied to target weeds while they are active and growing. The active ingredients in Shoreline Defense will be absorbed by the plant, where it travels to the roots killing the entire plant.


Mix the desired amount of Shoreline Defense and pond water in accordance to the label directions. Using a pressurized sprayer; spray the Shoreline Defense mixture directly onto target weeds. Use with Treatment Booster Plus for best results. Treated weeds will begin to brown and die. Once weeds are completely dead, cut and rake them away to prevent an accumulation of plant decay and pond muck.


Shoreline Defense carries no water use restrictions.


Shoreline Defense can not be shipped to Alaska, Arizona, California, Canada, Connecticut, District of Columbia, Hawaii, Maine, New Jersey, New York, Puerto Rico, Rhode Island, Vermont or Washington.


Accessories & Related Items




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Item Numbers and UPC

Item Number
UPC Code
530157 811262014342 32 Ounce
530167 811262014366 1 Gallon

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