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One of the more versatile herbicide active ingredients on the market is flumioxazin. The product can not only kill weeds and grasses on landscapes and turf but can also do the same on bodies of water as an aquatic herbicide. It is used prominently in the agricultural industry and also has a number of outdoor residential weed control applications, especially on golf courses.

Solutions Pest & Lawn has a number of herbicide products in stock which contain flumioxazin and we highly recommend this product to our customers who own ponds or manage bodies of water. On this page you can learn some background information about flumioxazin, it’s mode of action and benefits. You can also access this page to shop our entire line of products which contain flumioxazin.

What Is Flumioxazin?

The herbicide active ingredient flumioxazin was first developed by Sumitomo Chemical and is approved in Canada for use in fruit, vegetable and ornamental crops as well as for weed control in industrial plants against ragweed , dandelion and nightshade . In the United States in 2001 for use in peanuts and soybeans introduced. There were used almost 500 tons of the 2011th

Flumioxazin has been used as an agricultural chemical since 2001, and was registered for aquatic use in 2010. The active ingredient is 2-[7-fluoro-3,4-dihydro- 3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]- 4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione. It is available in granular form (we sell the Clipper brand) for control of submerged plants, and can be used as a direct foliar application to control emergent and floating-leaf plants. It also controls some filamentous algae. 

Flumioxazin is a yellow to slightly brown solid that is practically insoluble in water. Flumioxazin can work as both a pre-emergent or post-emergent herbicide and has been used to treat annual bluegrass and other warm-season turf grasses on golf courses.

How Does Flumioxazin Work?

The mode of action is based on the inhibition of protoporphyrinogen oxidase (PPO), an enzyme that is important for the synthesis of chlorophyll . In other words, flumioxazin works by interfering with the plants’ production of chlorophyll. Treated plants will respond quickly to treatment and rapidly decompose. For larger treatments or in dense vegetation, split treatments about two weeks apart are recommended to prevent fish suffocation from low oxygen due to decaying plants.  Flumioxazin has a half-life in water of about 2 to 10 hours and in soils of 12 to 17 days. 

Flumioxazin controls a number of invasive and problematic aquatic plants such as Eurasian watermilfoil and curlyleaf pondweed . It may also affect desirable native species, such as coontail, duckweeds , some pondweeds and native milfoil . 

For best results, flumioxazin needs to be applied to immature plants early in the spring as they begin to grow. It should not be used in very hard-water lakes where the pH over 8.5. Application in the early morning will increase efficacy, particularly in hard-water lakes. A body of water should not be treated with flumioxazin if there is an outlet, or in moving waters such as rivers or streams. 

Browse our selection of diquat contained products below. For more information about diquat or other active ingredients in our herbicides and insecticides, please don’t hesitate to reach out to us with your questions at 800-479-6583 or email us at askapro@solutionsstores.com

Why Buy These Products

Featured Products Which Contain Flumioxazin

Clipper Aquatic Herbicide Flumioxazin- Clipper Herbicide by Alligare LLC is formulated for the management of undesirable aquatic vegetation in slow moving or quiescent waters. Clipper is a fast acting contact herbicide for the control of submersed, emergent and floating aquatic weeds.


Payload Bare Ground Herbicide- Flumioxazin- Payload Herbicide manufactured by Valent is a bare ground herbicide for control or listed weeds in non-crop areas. Payload also offers pre-emergent and post-emergent control of selected grassy and broadleaf weeds.


Is Flumioxazin Safe To Use?

Flumioxazin is slightly to moderately toxic to fish. Flumioxazin is moderately to highly toxic to aquatic invertebrates, with possible impacts below the labeled maximum rate of 400 ppb (parts per billion). It is practically non-toxic to birds, small mammals and bees.


The risk of acute exposure would be primarily to chemical applicators; concentrated flumioxazin does not pose an inhalation risk, but can cause some skin and eye irritation. Recreational users of a water body would not be exposed to concentrated flumioxazin.


It is recommended that when using this chemical (or any of the other chemicals we carry) to use proper personal protective equipment (PPE) before handling or applying. Gloves, goggles, long sleeved clothing should be the minimum standard. Please refer to the label for proper safety instructions.

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