Quinclorac

Most Effective Products

Quinclorac 75 DF Herbicide (Crabgrass Killer)
Water Dispersible Granule (WDG)
As low as $50.49
Keith's Pro Tips

"For best results, make applications of Quinclorac when the ground is dry. If it has not rained within 2 to 7 days after the application, water the treated areas with up to a half-inch of water."

Quinclorac

Crabgrass is a growing problem on the lawns of most homeowners during the Summertime and they can be frustrating to control using mechanical or manual methods. Pulling them or mowing them usually is ineffective. However, there is an answer to getting rid of these crabgrass and other difficult weeds via an effective selective herbicide we carry here at Solutions Pest & Lawn, Quinclorac.

Solutions Pest & Lawn has a quality selection of herbicide products that contain the active ingredient Quinclorac. Our team of lawn care experts highly recommend Quinclorac and tout it to our customers as the ultimate Crabgrass killer. On this page we will share with you background info about Quinclorac, it’s mode of action and benefits. You can also access this page to shop our top recommended Quinclorac product.

What is Quinclorac?

Quinclorac is a herbicide active ingredient that is selective and is used post-emergently to control invasive broadleaf weeds, sedge grasses and Crabgrass. Quinclorac works systemically and can be absorbed by germinating seeds, roots and leaves.

Quinclorac is used in both agricultural and non-agricultural settings. It may be used to treat industrial and residential turf grass, parks, sports fields, sod farms, and golf courses. It is especially highly regarded for its superior Clover and Crabgrass control.

How Does Quinclorac Work?

Mode of Action

Quinclorac is a synthetic auxin. This means that its mode of action of Quinclorac is that it operates as a plant growth regulator by imitating natural plant hormones called auxins. Auxins, which are found in all plant life, are responsible for regulating the amount, type and direction of plant growth, and are mostly found at the tips of plant roots and shoots.

Quinclorac enters plants that have been treated through the leaves and roots, and replaces natural auxins at binding sites, causing abnormal growth patterns and disrupting the growth processes of the plant. 

The chemical builds up in the growing points of the plant, leading to rapid overgrowth, and eventual plant death. Death can usually arrive from as little as a few days to a couple of weeks.

Benefits of Quinclorac

Quinclorac is a selective post-emergent active ingredient, meaning it targets specific weeds and largely brings no harmful effects to desirable grass which may surround the offending weed when applied. Aside from targeting crabgrass primarily, Quinclorac can also eliminate weeds such as dandelion and clover which may come up in areas where the grass is stressed.

Use Quinclorac for weed control on residential and commercial lawns, golf courses, sports fields and sod farms.

Drawbacks of Quiclorac

While Quinclorac is effective, not every grass type can tolerate an application. Sensitive grasses like Bahiagrass, Centipedegrass and St. Augustine grass may be damaged by a selective application. Check the label for a list of grasses that can tolerate Quinclorac.

Is Quinclorac Safe?

Quinclorac is safe to use when applied carefully according to label directions. Keep off of the treated area until the product has fully dried.

While it is a relatively safe chemical to use, it is still highly recommended to use protective equipment (PPE) before applying quinclorac. Gloves, protective glasses and long sleeve clothing should be the minimum level of protection when handling this chemical. Please refer to the product label for specific safety instructions.

What To Expect

Selective Herbicide

When applying Quinclorac, spray enough to moisten the leaf surface. Quinclorac is rainfast within an hour meaning it will remain on the plant even if it were to rain rather than washing off. About 2 to 7 days later, it is recommended to irrigate the treated plant area so it filters down into the soil to be picked up by the broadleaf plants that you are trying to get rid of. 

After a week, you should notice that the areas of crabgrass and weeds that you treated are dying and turning brown. Be sure to check the product label to see the level of tolerance your desired grass can take as some vegetation is more tolerant of Quinclorac than others.

Featured Product

Quinclorac 75 DF Herbicide (Crabgrass Killer) - Quinclorac 75 DF Herbicide is comparable to Drive XLR8 and is the best crabgrass killer available. Quinclorac is a post-emergent crabgrass control product meaning you can spray it on actively growing crabgrass to stop the growth and eventually kill it.

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