Chlorsulfuron

Chlorsulfuron is an active ingredient used in herbicides that can control select broadleaf weeds and other undesirable grasses. Originally used for agricultural weed control and selective control of weeds in wheat and barley, Chlorsulfuron eventually became sold for commercial use to control broadleaf and grassy weeds on residential and commercial lawns and turf.

Solutions Pest & Lawn is proud to have in stock quality herbicides that contain Chlorsulfuron. On this page, you can learn some interesting facts about Chlorsulfuron, its mode of action, and its benefits. You can also access this page to shop our entire line of chlorsulfuron-based products.

What is Chlorsulfuron?

Chlorsulfuron was the first commercial herbicide from the sulfonylurea group of chemicals. It is 100 times more active than traditional herbicides, so very low rates are used in the field.

It is a selective and systemic herbicide that can be absorbed through the leaves and roots of the targeted weed. Its main uses are to control a wide variety of grass and broadleaf weeds as a pre-emergent application on wheat or as a post-emergent application on wheat, barley, and oat crops.

Some key weeds Chlorsulfuron is known to control successfully include Canada thistle, sunflower, henbit, plantain, smartweed, curly dock, Russian thistle, chickweed, cocklebur, and many others. It works against broadleaf weeds and some annual grass weeds. Certain perennials are also sensitive to the effects of Chlorsulfuron.

How Does Chlorsulfuron Work?

Mode of Action

The mode of action of Chlorsulfuron is that it stops cell division in plant roots and shoots, which in turn causes plants not to be able to grow any further.

Benefits of Chlorsulfuron

Chlorsulfuron is known to be a slow-killing herbicide, yet it is still very effective. It is also selective so that you can apply it to treatment areas without fear of desired plants being affected by the active ingredient.

Chlorsulfuron is best used as a pre-emergent to target problem weeds on sites before they have germinated or post-emergent control when plants are in their early growth stages.

Drawbacks of Chlorsulfuron

Because of its slow-killing traits, Chlorsulfuron can take several weeks to kill target weeds completely. Do not use Chlorsulfuron on weeds that have germinated and are in mature growth stages, as it will not be very effective in killing the plants.

Is Chlorsulfuron Safe?

Chlorsulfuron is safe to use when applied according to label directions. The active ingredient presents a low environmental hazard because it is used at low dilution rates and breaks down relatively quickly in most field situations and the environment. 

Make sure to use protective equipment before applying. Gloves, protective glasses, and long-sleeve clothing should provide the bare minimum of protection. Please refer to the product label for specific safety instructions.

What To Expect

An application of Chlorsulfuron begins to harm the plant as soon as the chemical contacts the target weeds, but it can take several weeks before the weed completely dies. Repeat applications may be necessary if a weed is very persistent or well-established.

Featured Products

Chlorsulfuron 75 WG Herbicide - Chlorsulfuron 75 is designed as a selective herbicide for use in industrial turf, pastures, ranges, and Conservation Reserve Lands. It can also be used for seedhead inhibition and growth suppression, making it a versatile product.