Semera®

$74.00$449.00

Flumigard and Semera aquatic herbicides eliminate invasive floating weeds and submerged weeds, such as duckweed and watermeal. They also treat a wide variety of algae.

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SKU:SEMERA

Top Weeds Controlled

Recommended Products

Product Info

Flumigard or Semera are our go to watermeal products. Flumigard and Semera control a wide range of nuisance lake weeds and pond plants effectively and quickly. These aquatic herbicides are available in a variety of sizes to treat ponds up to eight acres when used in surface applications. Flumigard and Semera deliver fast and selective control of tough invasive and nuisance plants such as watermeal, Eurasian watermilfoil, fanwort, mosquito fern, water lettuce, duckweed, giant Salvinia and more. Plus, Flumigard and Semera dissipate quickly from the water column and do not accumulate in sediment.

Benefits:

  • EPA approved
  • Active ingredient in WDG: Flumioxazin 51%. Same as Flumigard and Clipper
  • Active ingredient in SC: Flumioxazin 42%. Same as Flumigard SC
  • Safe for most fish and wildlife
  • No swimming or fishing restrictions
  • Fast acting
  • Results in just 7-14 days
  • Lake Restoration Product Guarantee

 

For a more complete pond maintenance solution or lake treatment, we recommend using our Watermeal Pond Treatment Products. We provide a simple solution to give your pond or lake the healthy and beautiful look it was intended to have and get the most out of your recreational area.

Manufactured by Atticus, LLC.

Made in the USA

 

Call us toll-free at 1-877-428-8898 for more information.

FAQ
Treatment Tips

Read all labels for complete instructions before applying products.

Weed identification

 

Our recommendations:

Submerged weed control

Floating weed control

How to apply

  • Use the Tormada product application boat for easy application (for submerged weeds)
  • Dilute (dissolve first if using granules) with tap water, and evenly spray the surface over the plants
    • Dilute 1 oz. in 1 gallon of water
    • 1 oz. = 1 ½ teaspoons of granules
  • If using with a surfactant, dilute (dissolve first if using granules) products with tap water, and evenly spray the surface over the plants entirely
    • Dilute 1 oz. Semera and 8 oz. of surfactant in 1 gallon of water
    • 1 oz. = 1 ½ teaspoons of granules

When to apply

  • Apply on a sunny, calm day when the water temperature is 60° F or warmer
  • Treat early in the morning, and when plants are actively growing and near the surface of the water
  • May re-treat every 7-14 days or when there is new growth

Other tips

  • Application rates based on a 1 ft. average depth, areas with dense growth may require a higher rate to be used
  • Mix with surfactant for floating and emergent plants
Label / SDS

Semera WDG Label

Semera WDG SDS

Semera SC Label

Semera SC SDS

Flumigard Label

Flumigard SDS

Flumigard SC Label

Flumigard SC SDS

Aquatic herbicides water use restrictions according to label:

  • Swimming: 0 days
  • Drinking water: 0 days
  • Domestic uses: 0 days
  • Fish consumption: 0 days
  • Irrigation for food/crop: 5 days
  • Irrigation for turn/ornamental: 5 days
  • Livestock watering: 0 days
Shipping Info

FREE shipping on orders $99+

Orders $98.99 or less will be charged $8.95.

Orders are usually shipped within one day by a ground carrier.

 

U.S. shipping only.

Certain regulations apply for shipping to AK, CA, CT, DE, HI, ME, MA, NJ, NY, VT, WA, DC. Please contact us if you live in one of these states: 1-877-428-8898.

Lake/Pond Size Calculator
Area: Lake Pond

Reviews

Description

Flumigard or Semera are our go to watermeal products. Flumigard and Semera control a wide range of nuisance lake weeds and pond plants effectively and quickly. These aquatic herbicides are available in a variety of sizes to treat ponds up to eight acres when used in surface applications. Flumigard and Semera deliver fast and selective control of tough invasive and nuisance plants such as watermeal, Eurasian watermilfoil, fanwort, mosquito fern, water lettuce, duckweed, giant Salvinia and more. Plus, Flumigard and Semera dissipate quickly from the water column and do not accumulate in sediment.

Benefits:

  • EPA approved
  • Active ingredient in WDG: Flumioxazin 51%. Same as Flumigard and Clipper
  • Active ingredient in SC: Flumioxazin 42%. Same as Flumigard SC
  • Safe for most fish and wildlife
  • No swimming or fishing restrictions
  • Fast acting
  • Results in just 7-14 days
  • Lake Restoration Product Guarantee

 

For a more complete pond maintenance solution or lake treatment, we recommend using our Watermeal Pond Treatment Products. We provide a simple solution to give your pond or lake the healthy and beautiful look it was intended to have and get the most out of your recreational area.

Manufactured by Atticus, LLC.

Made in the USA

 

Call us toll-free at 1-877-428-8898 for more information.

Additional information

Options

Semera SC 8 ounces (treats up to 1/2 acre) – $74.00, Semera WDG 1 lb. (treats up to 1 acre) – $115.00, Flumigard 5 lbs. (treats up to 5 acres) – $349.00, Flumigard 1/2 gallon (treats up to 4 acres) – $239.00, Flumigard 1 gallon (treats up to 8 acres) – $449.00

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