Poast Herbicide

Poast Herbicide

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Product Overview

Poast Herbicide affects the lipid synthesis by inhibition of Acetyl CoA Carboxylase (ACCase) in plants. It belongs to herbicide mode-of-action Group 1. Lipids are an important component in cell division and plant growth. If plant cells cannot divide, the plant will die.

Poast rapidly enters the target grass weed through its foliage and moves throughout the plant. Effects range from slowing or stopping growth (typically within 2 days) to foliage reddening and leaf tip burn. Foliage burnback may occur later. Symptoms are typically observed within 3 weeks of application of Poast, depending on environmental conditions.

Features and Specs

Active Ingredient Sethoxydim 18%
Target pests Barnyard-grass, Crabgrass (Large & Smooth), Cup-grass, Fescue (Tall), Foxtail, Goose-grass, Rye-grass, Witch-grass, Bermuda-grass and others
* See Label for complete list
For use in Alfalfa, Asparagus, Blueberry, Carrot, Clover, Corn, Flax, Grape, Horseradish, Leafy Vegetables, Peach, Peanut, Potato, Strawberry, Tobacco, Tomato, Tree Nuts and others
* See Label for complete list
Application * See Label for complete application instructions
Pet safe Yes, if used as directed on Label
Formulation Professional Product
Group 1 Herbicide
VT (Restricted To Licensed Applicators Only)
Shipping Weight 21.00 lbs
Manufacturer BASF
EPA Registration 7969-58


Application Instructions

Apply Poast herbicide to actively growing grass weeds by aerial or ground application at the rates and timing (maximum height) listed (annual grass weeds), (perennial grass weeds), and (early and rescue treatments to control select annual grass weeds), as instructed in the Use-specific Information section of this label. For small area application or spot application, refer to Label.


The most effective control will be achieved by applying post-emergence applications of Poast early in the growing season, when grass weeds are small. Poast may not be effective on grass weeds that have grown taller than the maximum heights listed.

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Questions & Answers

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Can I use Poast Herbicide safely to kill grass in a asparagus bed?

Have an asparagus bed that’s getting pretty infested with grass, and want to kill the grass but keep the asparagus! Will this do the trick?


Poast Herbicide is labeled to be used on asparagus as directed on the label and would not harm it.

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8 of 9 people found this answer helpful

Is Poast safe to use on centipede/St. Augustine grass?

Poast is actually a grass killer, so it would not be safe to use on centipede or St. Augustine grass.

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5 of 12 people found this answer helpful

Can Poast Herbicide be used for sedges in collards?

Poast Herbicide can be used on collards, but it does not control sedge or broadleaf weeds. Your best option would be to pull them up or spot treat with a nonselective such as RoundUp QuikPro.

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4 of 5 people found this answer helpful

Will Poast Herbicide kill coffeeweed in an okra field?

Poast Herbicide is not labeled for coffee weed. Unfortunately we are not able to find a selective herbcide labeled to kill coffee weed in okra. One option would be spot treating weeds directly with a non selective glyphosate herbicide like Roundup to kill weeds when they are actively growing. 

We also recommend contacting your Local Cooperative Extension Office for their advise on any herbicides or other treatments they have found to be successful.in eradicating coffee weed in okra.   

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Can Poast Herbicide be used on Liriope muscari?

Poast is not specifically labeled for use in Liriope or other types of groundcover.

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0 of 2 people found this answer helpful

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