Product Overview

Galleon delivers safe, effective control of submersed, floating, and emergent invasive and nuisance aquatic plants. Galleon is ideal for use in long-term management plans, when gradual control is desired or when water bodies feature a variety of plant and animal life.

The First of Its Kind

The first fully registered acetolactate synthase inhibitor, Galleon's systemic mode of action delivers excellent control of hydrilla, water hyacinth, water lettuce, salvinia species, frog’s bit, and duckweed. Galleon's gradual speed of kill maintains water quality and ensures the health of fish, while its unique chemistry is gentle on desirable aquatic vegetation such as maidencane, knotgrass, coontail, lotus, and water lily.

Designed for cost-effective control of large infestations, in-water treatment of hydrilla will produce one to two seasons of control under most conditions. In addition, Galleon will provide simultaneous action on most floating weeds with greatly extended control versus traditional spray methods.

Effective, Convenient Control
  • Immediate growth inhibition followed by complete control over 60 to 120 days
  • Much-needed, additional systemic mode of action for hydrilla control in integrated control programs designed for improved herbicide resistance management
  • Good safety on perennial aquatic grasses such as maidencane and knotgrass, and many other desirable native plants including coontail, lotus, and waterlily
  • Similar to Sonar™, gradual death of treated target weeds allows large infestations to be treated effectively while maintaining overall water quality
  • Low foliar use rates typically between 2-4 ounces per acre for floating and emergent weed control reduce applicator exposure and improve logistics versus current herbicide options
  • Excellent rotational complement to Sonar in Integrated Pest Management (IPM) programs for herbicide resistance management
Minimal Restrictions
  • No restrictions on use of treated water for drinking, swimming, or fishing
  • Minimal restrictions on turf irrigation
  • Food crop irrigation requires less than 1 ppb in treated water
  • Consult with SePRO on latest recommendations for non-food crop irrigation
  • Galleon SC is classified as an EPA Reduced-Risk Aquatic Herbicide based on its use characteristics and toxicology
Multiple application options give you flexibility:
  • Injection for large-scale, in-water treatment of submersed and floating species
  • Foliar sprays via ground, boat, or aerial application for targeted treatments of floating and emergent species
  • Direct application to exposed littoral sediment for pre-emergence control following drawdown or other low-water events
For More Information

For more information about Galleon Aquatic Herbicide or assistance in designing a treatment prescription, contact a SePRO Technical Specialist

FasTEST* assays are available for quantitative, cost-effective monitoring of Galleon SC treatments to maximize performance and meet product label requirements.
For best long-term environmental stewardship of Galleon SC, applicator training will be required in Best Management Practices (BMP) for product assessment, prescription and implementation.

Labels and SDS

May not be registered in all states. Always read and follow directions.

Registered States

Experts in Aquatic Solutions

SePRO’s Technical Specialists are trained to assist you with your toughest issues, from aquatic weeds that keep coming back to nusiance or toxic algae that are plaguing a water body. See how we can help.