Hi-Yield Grass Killer Post-Emergent Herbicide

4.5 out of 5 stars 17 Reviews | 65 Q&A

Hi-Yield Grass Killer Post-Emergent Herbicide

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Average Rating

4.5 out of 5 stars Rating: 4.4

17 Reviews | 65 Q&A

Product Overview

Hi-Yield Grass Killer is a post-emergent selective herbicide that kills annual and perennial grasses in ornamental landscapes and desirable plants. Can also be used on trees, shrubs, and ground covers. Hi-Yield Grass Killer stops grass from growing within 2 days of application.

For best results you should add a surfactant to your solution to help the product stick to the target weeds and grass.

Available Sizes:

  • Hi - Yield Grass Killer Post - Emergent Herbicide – 8 oz
  • Hi - Yield Grass Killer Post - Emergent Herbicide – Pint

Features and Specs

Active Ingredient: Sethoxydim 18%
Target pests: Barnyardgrass, Bermudagrass, Crabgrass (large & smooth), Foxtails, Quackgrass, Witchgrass and others
* See label for complete list
For use in: Vegetables, Gardens, Trees, Shrubs, Ornamentals and ground covers
Application: 1 oz. per gallon of water per 1,800 sq. ft.
* Use 1 oz. of surfactant per gallon of solution
* See Label for complete application instructions
Pet safe: Yes, if used as directed on Label
Shipping Weight: 0.57 lbs
Manufactured By: VPG (Mfg. Number: 31134)
UPC: 732221311343

Details

Intended for residential use on and around:

Flowers, Evergreens, Shrubs, Trees, Fruits*, Vegetables*, Ornamental-Groundcovers, Bedding Plants

WEEDY GRASSES CONTROLLED

This product kills most annual and hard-to-kill perennial grasses up to 1 foot high, including the following examples, in one or two applications. Younger, actively growing seedling weeds are more easily killed than older, mature, well-established grassy weeds that may require a repeat application for control. Adding oil concentrate may help control grassy weeds.

Barnyardgrass, Bermudagrass, Broadleaf Signalgrass, Crabgrass (Large & Smooth), Fall Panicum, Foxtail (Giant, Green & Yellow), Goosegrass, Johnsongrass (Seedling & Rhizome), Junglerice, Lovegrass, Orchardgrass (Seedling), Quackgrass, Tall Fescue Seedling, Texas Panicum, Shattercane/Wildcane, Wild Proso Millet, Wirestem Muhly, Witchgrass, Wooly Cupgrass

APPLICATION TIMING

Apply when grassy weeds are actively growing, not exceeding the minimum of days from application to harvest when used on vegetables and fruits. Warm sunny weather will accelerate systemic movement from leaves and stems down to the roots to give complete kill. DO NOT mow or cut off tops of weeds before spraying. DO NOT apply if rainfall is expected within one hour following application. Growth of treated grass stops soon after application. Grass turns yellow and dies within one to three weeks depending on the grass species, stage of growth and weather conditions. Cool weather, drought, and heat stress slow activity.

5 stars   13
4 stars   2
3 stars   0
2 stars   0
1 star   2
  
  • 5 of 5 Stars

    A good deal

    By Nancy on 03/17/2015

    Verified Purchase

    I used this product once last summer and it stopped my Bermuda grass from growing within my Centipede. The runners appear green when runner stalks were broken even though they have not grown any...so I am going to use this again in a few weeks to prevent any spring growth. So far, it is the only thing I have found to eliminate the Bermuda.

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    29 of 31 people found this review helpful

  • 5 of 5 Stars

    Great service!

    By Bruce on 09/09/2015

    Ordered Hi-Yield grass killer on Monday and received it on Thursday. I had a number of Crab Grass patches in our lawn and used it as a spot spray on those patches. Follow the label and add a spreader sticker oil. It has been several days and the Crab Grass appears to be killed and I am satisfied with the product.

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    24 of 24 people found this review helpful

  • 5 of 5 Stars

    Killing bermuda in centipede

    By Ultracon on 05/23/2016

    This stuff really works when used with the surfectant! After one application, the bermuda has stopped growing and is dying. The centipede is untouched! A second application will be going on in a week or so. This is really, really, good stuff and worth the $$!!!!! Be sure to get the surfectant as well to mix them together. A solution to my problem after years of digging and pulling!

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    16 of 17 people found this review helpful

  • 5 of 5 Stars

    HY YIELD GRASS KILLER

    By R on 08/23/2016

    WORKS GREAT TO KILL BERMUDA AND CRABGRASS IN CENTIPEDE LAWN.

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    9 of 11 people found this review helpful

  • 5 of 5 Stars

    Dave

    By David on 09/07/2016

    excellent product, killed all my wild grasses and did not harm my centipede

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    8 of 8 people found this review helpful

See all 17 customer reviews

Questions & Answers

Have a question about this product?
  
Q
What is "oil concentrate"?

Why is it not in "Hi-Yield" grass killer or why is not stated on front of label that it will be needed? Frustrating to drive one hour home to read label and then find out!

A
We are not the manufacturer so we cannot comment on why it is not on the label.  When an herbicide calls for oil, it is referring to a surfactant.  Surfactant helps the herbicide stick to the waxy coating of the weeds and lawn you are applying it to.  It improves the effectiveness of herbicides greatly.

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33 of 37 people found this answer helpful

Q
Is Hi-Yield OK for berries and conifer plantings?

I'd like to keep the grass away from our rows of blackberries and also plan to put in a windbreak of Eastern Redcedar, Mulberry, and American Plum and need to keep grass away from the seedlings. Safe?

A
Yes, the Hi-Yield Grass Killer Postemergence Herbicide is labeled to be used around fruits, vegetables, and ornamentals without fear of damaging these desirable vegetation.

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18 of 18 people found this answer helpful

Q
Can I use Hi-Yield Grass Killer safely on the grasses growing in my iris plants?
A
Hi-Yield Grass Killer is a post-emergent selective herbicide that kills annual and perennial grasses in ornamental landscapes and desirable plants. Iris plants are tolerable per the product label. You will use 1 fl. oz. per gallon of water and add a surfactant such as Hi-Yield Spreader Sticker.

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13 of 14 people found this answer helpful

Q
What types of oil can be used as a surfactant? I've used dish detergent in the past with other products.
A
The manufacturers normally recommend that you use some type of certified surfactant with their products like the Non Ionic Surfactant. With a Glyphosate product like the Hi Yield Grass Killer Herbicide, you would need 1 tablespoon per gallon of mixture. Please let us know if you have any other questions.

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10 of 12 people found this answer helpful

Q
Will the Hi-Yield Grass Killer Postemergence Herbicide harm asparagus or chicory

Plan to use on garden and wildlife food plots

A
The product label for the Hi-Yield Grass Killer Postemergence Herbicide does state it can be safely applied to asparagus and several other types of vegetables.  We have contacted the manufacturer to ask about chicory and wild food plots as those are not on the label and will let you know what we find out

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9 of 10 people found this answer helpful

See all 65 customer questions

Hi-Yield Grass Killer Post-Emergent Herbicide 4.5 out of 5 stars Rating: 4.4 (17 Reviews / 65 Q&A)

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