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Flumigard Herbicide - Aquatic Weed Killer

Rapid, no-restriction weed control

Regular price $249.95
Sale price Regular price
Amount: 5 lbs

Why You'll Love It

  • No downtime for swimming
  • Kills tough weeds fast
  • Granular, easy to apply

Specifications

  • Product Type: Aquatic contact herbicide
  • Formulation: Water-soluble granules
  • Active Ingredient: Flumioxazin – 51%
  • Controls: Duckweed, watermeal, hydrilla, milfoil, elodea, algae
  • Results: Visible in 7–14 days
  • Application: Granules applied to water surface or subsurface injection
  • Use Rate: 12-16 ounces per acre for surface applications. An aquatic surfactant like Cide-Kick is recommended.
  • Water Use Restrictions: None for swimming or fishing
  • Use Areas: Residential ponds, golf course lakes, aquaculture, retention basins
  • Shelf Life: 2–3 years if stored dry
  • EPA Registered: Yes - EPA Reg No: 81927-78

Description

📖 Product Description +

Flumigard Herbicide – Fast-Acting Duckweed & Watermeal Control

Flumigard is a professional-grade aquatic herbicide designed to eliminate invasive floating and submerged weeds such as duckweed, watermeal, hydrilla, and Eurasian watermilfoil. Powered by 51% Flumioxazin, it delivers visible results in 7–14 days without sediment buildup, making it one of the most effective early-season treatments for rapid pond restoration.

💎 Key Features & Benefits +
#1 Choice for Watermeal & Duckweed

Highly effective surface application control of floating weeds including duckweed, watermeal, and giant salvinia.

Fast Visible Results

Weeds begin showing bleaching and dieback within 7–14 days under proper conditions.

No Sediment Accumulation

Flumioxazin dissipates quickly in the water column and does not build up in pond sediment.

🛠 Technical Specifications +
Active Ingredient 51% Flumioxazin
Formulation Water-Soluble Granular
Application Rate 12–16 oz per surface acre (surface applications)
Results Timeline Visible in 7–14 days
Water Use Restrictions No swimming or fishing restrictions (follow label for irrigation guidance)
Sizes Available 1 lb Container or 5 lb Value Pack
📋 Application Guide (Best For) +
  • Best For: Duckweed, watermeal, hydrilla, Eurasian watermilfoil, curlyleaf pondweed, cabomba, and floating invasive weeds.
  • Not For: Use in restricted states (CA, CT, ME, MI, NJ, NY, OR, WA) or without reviewing full label instructions.
  • 💡 Pro Tip: Use with an aquatic surfactant like Cide-Kick II for maximum surface contact and improved uptake.
❓ Frequently Asked Questions +

Q: How fast does Flumigard work?
A: Most floating weeds begin showing bleaching within 7–14 days, with continued die-off as the product completes its activity cycle.

Q: Will Flumigard build up in pond sediment?
A: No. Flumigard dissipates quickly from the water column and does not accumulate in pond bottom sediments.

Q: Do I need to treat the entire pond?
A: For floating weed control like duckweed or watermeal, treating the entire surface area at labeled rates ensures consistent and season-long control.

Vendor: Outdoor Water Solutions

Type: Aquatic Herbicide

SKU: PSP0364

Alligare Flumigard aquatic herbicide in a 1-pound white container with product label and safety instructions.

Flumigard Herbicide - Aquatic Weed Killer

Regular price $249.95
Sale price Regular price

Frequently Asked Questions

Is Flumigard safe for swimming and fishing?

Yes. There are no restrictions—ponds remain accessible immediately after treatment.

How soon will I see results?

Visible weed control typically occurs within 7–14 days, depending on infestation density.

What types of weeds does Flumigard control?

Flumigard controls floating and submerged weeds including duckweed, watermeal, hydrilla, milfoil, elodea, and various algae species.

Is Flumigard safe for swimming and fishing?

Yes. There are no restrictions—ponds remain accessible immediately after treatment.