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Cornerstone Plus Post-Emergent Herbicide

Usually Ships in 1-2 days
Get broad-spectrum weed control with Cornerstone Plus Herbicide, an effective herbicide for eradicating post-emergent weeds on turfgrass and Roundup Ready crops. It contains an active ingredient for controlling both annual and perennial weeds and goes from the shoots to the roots as it eliminates the plants. With the power to target more than 100 different weed species, this nonselective herbicide does the job of multiple products. If you want something better for your weed management, go with Cornerstone Plus herbicide.

Features and Specifications

Active Ingredient(s) Glyphosate 41%
Weed Killer Kills: Annual Weeds, Perennial Weeds, Broadleaf Weeds, Grasses
Sale Prohibited AK, CA, HI, WA
Shipping Rate Free
EPA Registration 1381-192

How Cornerstone Plus Works

Cornerstone Plus Herbicide contains glyphosate, a high-potency ingredient for the successful killing of broadleaf weeds and grasses. After spraying, the weed absorbs the herbicide and circulates it throughout the plant and down into the roots. It slowly kills competing weeds that strangle desirable plants and grasses in the same area. You can also use Cornerstone Plus with an adjuvant or a surfactant in the tank for optimal weed performance.

Where to Use Cornerstone Plus Herbicide

Use Cornerstone Plus Herbicide to kill unwanted weeds and grasses on Roundup Ready crops such as canola, cotton and soybean. It also targets weeds in pastures, range lands, greenhouses and shade houses. Apply Cornerstone Plus for habitat management or as an injection for woody brush and trees. It also keeps turfgrass, industrial sites, railroads and roadsides free of weeds.

Target Weeds

Cornerstone Plus Herbicide affects more than 100 broadleaf weeds and grasses. From barnyardgrass to carpetweed, this herbicide works after one spray and kills bothersome weeds where they grow. It also takes out many common weeds such as chickweed, crabgrass and dwarf dandelion. Other target weeds include:

  • Corn speedwell
  • Fleabane
  • Foxtail
  • Henbit
  • Johnsongrass
  • London rocket
  • Pigweed
  • Ragweed
  • Smartgrass
  • Stinkgrass
  • Wheat
  • Witchgrass

Cornerstone Plus Herbicide Features and Benefits

  • Power to kill more than 100 annual and perennial broadleaf weeds and grasses
  • Contains glyphosate for effective and successful weed elimination
  • For use on turf, industrial sites, Roundup Ready crops and other labeled areas
  • Tank-mix compatible with some adjuvants and surfactants for better control
  • Easy to mix and apply and has a wide window of application

Tips for Use

  • Use 24 ounces per acre to control downy brome using a no-till system.
  • Target wheat before the boot stage for the best results.
  • Avoid treating kochia in the button stage.

Cornerstone Plus Has the Power to Eliminate Weeds

With Cornerstone Plus, you can target, kill and control many different weeds and grasses with one product. The active ingredient glyphosate goes from the shoots to the roots and provides successful eradication of invasive plants on turfgrass, roadsides and Roundup Ready-treated crops. You can even use it with a tank mixture for greater weed control where you need it. For maximum weed-fighting power, go with the effectiveness and strength of Cornerstone Plus herbicide.


It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulations.


For additional information on this product please reference the CDMS label database listed below



Ask a Question
  • how many ounces per gallon?

    1 to 1.5oz per gallon

  • How long does Cornerstone need to be on prior to getting rained on?

    About 30 min

  • After using it on the grass in my garden, how long must I wait to plant seeds and plants, or can I?

    6 Weeks

  • Can you use it in flower beds?

    You should only use a non selective in flower beds when there are no flowers present

  • how soon can i plant winter wheat and clover after using cornerstone

    4-6 Weeks

  • Do I water after applying


  • What ratio is the mixing solution. Cornerstone/Water

    1 to 1.5oz per gallon of water

  • If I spray cornerstone plus around trees to kill the grass will it kill the tree?

    Please see the cornerstone plus product label for use around trees

  • how many ounces of product per gallon of water ?

    1 to 1.5oz per gallon of water

  • Will this kill Saint Augustine turf grass if broadcast sprayed?

    It is best to spray a test plot in the affected area to make this determaintion

  • When can lawn be reseeded

    6 weeks

  • Im spraying an area to plant food plots for hunting season. How long after spraying this product can I plow and plant over it without affecting the seed production. Thanks

    Six Weeks

  • How long do you have to wait before you get a rain on it

    12 hour or more is best.

  • Does it kill poison oak and poison ivy?

    Yes at a higher rate of 2 to 3 oz per gallon mix

  • Will this kill trees? I have a fence line close to trees and I am wanting to use this on the fence line but i do not want to harm my trees.

    Be very mindful of Drift. I would use a surfactant as well. Don’t spray inside the drip line or on any suckers from your trees. Make sure you want to kill everything you spray. 

  • how long after sprayed does it take to die?

    Depending on the weeds you sprayed and the time of day you sprayed 2 to 3 days