Flumigard® Aquatic Herbicide | Fast-Acting Duckweed, Watermeal & Aquatic Weed Control

Specifications

• Product Type: Aquatic Contact Herbicide
• Formulation: Water-Soluble Granules
• Active Ingredient: Flumioxazin – 51%
• Target Weeds: Duckweed, Watermeal, Hydrilla, Milfoil, Elodea & Algae
• Results: Visible Results Typically Within 7–14 Days
• Application: Apply Granules to the Water Surface or Use Subsurface Injection
• Use Rate: 12–16 oz. per Acre for Surface Applications
• Surfactant: An Aquatic Surfactant Such as Cide-Kick Is Recommended
• Water Use Restrictions: None for Swimming or Fishing When Applied According to Label Directions
• Use Areas: Residential Ponds, Golf Course Lakes, Aquaculture Facilities & Retention Basins
• Shelf Life: 2–3 Years When Stored in a Dry Location

Restore your pond quickly with Flumigard® Aquatic Herbicide, a professional-grade aquatic herbicide formulated with 51% flumioxazin for rapid control of floating, submerged, and select emergent aquatic weeds. Known as one of the most effective early-season treatments available, Flumigard® delivers visible results in as little as 7–14 days while helping restore cleaner, healthier ponds and lakes.

Flumigard® is especially effective against difficult floating weeds such as duckweed, watermeal, and giant salvinia, while also controlling troublesome submerged species including hydrilla, Eurasian watermilfoil, curlyleaf pondweed, and cabomba. The active ingredient works quickly and dissipates in the water column without accumulating in pond sediments when used according to label directions.

Ideal for pond owners, lake managers, golf courses, municipalities, and aquatic professionals, Flumigard® provides dependable weed control with excellent performance as part of a proactive aquatic vegetation management program.

Key Features & Benefits

• Professional-grade aquatic herbicide with 51% flumioxazin
• Fast control of floating, submerged, and select emergent aquatic weeds
• Excellent control of duckweed, watermeal, and giant salvinia
• Effective on hydrilla, Eurasian watermilfoil, curlyleaf pondweed, cabomba, and other labeled species
• Visible bleaching and weed decline typically begin within 7–14 days
• Active ingredient dissipates quickly without accumulating in pond sediments
• Ideal for early-season aquatic weed management
• Easy liquid application with standard spray equipment
• For use according to all label directions and local regulations

Best Applications

Ideal For

• Duckweed control
• Watermeal control
• Giant salvinia management
• Hydrilla
• Eurasian watermilfoil
• Curlyleaf pondweed
• Cabomba
• Early-season whole-pond or targeted aquatic weed management

Not Recommended For

• Shipping to restricted locations, including California, Connecticut, Maine, Michigan, New Jersey, New York, Oregon, or Washington
• Applications without following all label directions and water-use restrictions

How It Works

Flumigard® is absorbed by susceptible aquatic plants after application, disrupting essential cellular processes that cause treated weeds to bleach, decline, and die over the following 7–14 days under favorable growing conditions.

For floating weeds, applying Flumigard® with a labeled aquatic surfactant, such as Cide-Kick II, can improve surface coverage and herbicide uptake for enhanced performance where permitted by the product label.

Always read and follow the product label for approved aquatic uses, application rates, water-use restrictions, pH considerations, and safety precautions.

Aquatic Herbicides

• Flumigard Herbicide - 1 lb. Container (replaces Clipper)
  
• Flumigard Herbicide - 5 lb.