Grass Out Max (Clethodim Herbicide) - Questions & Answers

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  • Asked by Shawn from Wi
    06/27/2018
    Q
    Can Grass Out kill all grassy weeds in my lawn EXCEPT Kentucky Blue Grass?
    My lawn is full of grassy weeds, annual bluegrass, foxtail, Quack grass, etc. If I wanted to broadcast apply something to my entire lawn, kill everything undesirable leaving only the Kentucky Bluegrass in-tact, is this the product I'm looking for?
    A

    Grass Out Max is a non selective grass killer, meaning it will kill your KGB as well.  A better option would be use Q4 for everything but the quackgrass and the poa annua. Unfortunately there is not an herbicide that would kill the quackgrass nor poa annua without damage cool season turf, such as Kentucky Bluegrass. If only a small area of the lawn is affected by the outbreak, spray only the affected area with RoundUp Quick Pro. If the problem amounts to no more than a few spears of quackgrass in an area of your lawn, paint the individual spears with diluted RoundUp QuickPro. Becareful to avoid getting the product on desirable grass. If most of the lawn has been affected by quackgrass, the only sure fire way to get rid of it is to spray the entire lawn with Roundup. Spray when the lawn is growing actively, preferably in the spring. The treatment will kill the lawn grass as well as the quackgrass. After about two weeks, you may begin the replanting.

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    3 of 5 people found this answer helpful.
  • Asked by Ronnie from Clinton, Al
    06/04/2018
    Q
    Can Grass Out Max be used around watermelon and cantaloupes?
    A

    Yes, Grass Out Max is labeled for use around watermelon and cantaloupes.  Please see the product label for complete application instructions. 

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    3 of 4 people found this answer helpful.
  • Asked by Walters from Lapeer Mich
    04/08/2014
    Q
    When should you apply Grass Out Max (Clethodim Herbicide) and how often
    A
    Grass Out Max (Clethodim Herbicide) is a post emergent herbicide and works best on actively growing weeds. The application interval all depends on what you are applying to. Please review page 9 of the product label.
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    3 of 6 people found this answer helpful.
  • Asked by Meghan from Sandy, Ut
    05/11/2018
    Q
    Is Grass Out Max (Clethodim Herbicide) effective against Kentucky Bluegrass spreading into my beds?
    A

    Grass Out Max (Clethodim Herbicide) does not list that it will control Kentucky Bluegrass only annual bluegrass.  A better option would be a glyphosate based product like GlyPhoSel Pro taking care to avoid any spray/drift to desirables.

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    3 of 4 people found this answer helpful.
  • Asked by Mark from Saint Albans, Vt
    04/25/2018
    Q
    Is Grass Out Max (Clethodim Herbicide) safe to use on and around Peonies?
    A

    Yes, Grass Out Max (Clethodim Herbicide) can be used on and around Peonies. It is only labeled to control grassy weeds. 

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    3 of 4 people found this answer helpful.
  • Asked by Jackie from Los Angeles,ca
    03/25/2018
    Q
    Can Grass Out Max (Clethodim Herbicide) be used on a Fescue lawn for treating annual bluegrass invasion?
    A

    ? Grass Out Max? is specifically designed to kill any and all grasses it is sprayed on and ONLY kill grasses. This would not be a product you would want to use over a lawn and instead you would want to go with a product that is selective in either a pre or post emergent form. Because poa annua and and fescue are so closely related, there are few products that will kill the poa annua without also harming the fescue.  The only one we are currently aware of is called Prograss. Your other options would be to either spot-treat with a Roundup-type? product and then reseed with the fescue in those areas, or you can use a preemergent like Prodiamine 65 WDG in the fall to prevent the poa from growing in the first place.

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    3 of 3 people found this answer helpful.
  • Asked by Tracy from Il
    07/10/2017
    Q
    Can I spray Grass Out Max (Clethodim Herbicide) on Ladino Clover ?
    A

    Yes, Grass Out Max (Clethodim Herbicide) can be used over ladino clover. It will not kill the clover, only the weeds in the area.

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    3 of 4 people found this answer helpful.
  • Asked by Doug from South Carolina
    05/27/2017
    Q
    Will Grass Out Max kill the the centipede grass, too?
    I'm trying to kill goose grass mixed in centipede.
    A

    Grass Out Max is a grass killer that will kill the centipede.  Certainty Herbicide could be used for suppression or partial control of quackgrass in centipede.

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    3 of 4 people found this answer helpful.
  • Asked by Holly from Atlanta, Ga
    07/11/2016
    Q
    Will Grass Out kill Zoysia that is growing in Mondo Grass and Euonymous, without harming them?
    A

    Grass Out Max (Clethodim Herbicide) would not harm ground covers like Mondograss and Euonymous when used as directed on the product label.  It is not labeled to kill zoysiagrass so we cannot recommend it for this use.  Typically a glyphosate based product would be used to control it in these areas with care being taken to avoid contact with desirables.

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    3 of 6 people found this answer helpful.
  • Asked by Maura from Los Angeles, Ca
    11/19/2017
    Q
    Will Grass Out Max work to remove grasses from ivy ground cover?
    We have a lot of tall grass growing up through ivy ground cover. We want to keep the ivy but kill the grass.
    A

    Yes, Grass Out Max Herbicide is safe to use in established English Ivy for control of grassy weeds. Please refer to the product label for complete application instructions.

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    3 of 5 people found this answer helpful.
  • Asked by Laurie from Kalamazoo Mi
    05/11/2021
    Q
    How pet safe is Grass out?
    I mixed Grass Out at recommended rate of 0.5 oz per gallon, with about 2 tsp of surfactant (Hy Yield spreader sticker). Then discovered I only had a half gallon sprayer! I let dogs out a couple hours later and they immediately wanted to eat the grass I sprayed!!!
    A

    Grass Out Max (Clethodim Herbicide) is safe to use around animals if applied according to the instructions on the product label.  Animals must be kept out of the treated area during application and until everything is dry. 

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    2 of 2 people found this answer helpful.
  • Asked by Tony from Sherwood, Arkansas
    03/27/2019
    Q
    Will Grass Out Max help control Poa Annua (Annual Bluegrass) in bermuda grass lawns?
    Our lawn is Tif Bermuda and has been doing well for about 10 years; we live in central Arkansas. However, I have noticed that Poa Annua grass is invading a section of our yard and nothing I do seems to control it. I have tried grannular pre-emergnts treatments in the fall and it keeps coming back. Thank you
    A

    Grass Out Max is a grass killer and would likely kill the bermuda along with the poa annua.  To target poa anuua in bermuda, you may want to consider using Certainty Herbicide instead as it will not harm the bermuda grass. 

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    2 of 4 people found this answer helpful.
  • Asked by David from Tampa, Fl
    01/03/2017
    Q
    If we use Grass Out Max to eliminate zoysia grass in our jasmine beds, will this harm the good zoysia in the lawn ?
    A

    Grass Out Max is safe to use in jasmine ground cover and will kill grassy weeds. It will not kill your zoysia grass in the lawn unless you spray it directly.

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    2 of 7 people found this answer helpful.
  • Asked by Sean from Wi
    08/14/2019
    Q
    Will Grass Out Max kill honey bees?
    A

    GrassOut Max  should be applied where and when the bees are not foraging. 

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    2 of 3 people found this answer helpful.
  • Asked by Jesse from Ontario, Ca
    02/15/2020
    Q
    How long do I need to wait to overseed lawn sprayed with Clethodim and Glyphosate?
    A

    Grass Out Max (Clethodim Herbicide) is not labeled to be used in home lawns so we would not recommend using it there nor are there directions for this use.  With glyphosate based products you can reseed after 2 weeks from the last application.

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    2 of 5 people found this answer helpful.
  • Asked by Joe from Peru, Il
    07/07/2020
    Q
    Is Grass Out Max safe for hostas and day lily?
    A

    Grass Out Max is a selective post-emergent herbicide used to control annual and perennial grasses. It is labeled for most landscape, home and garden, ornamental, agricultural and non-crop uses. The unique feature of Grass Out Max is that it will ONLY kill grasses and NOT affect flowers, shrubs, broadleaf crops or other broadleaf plants.  Yes, it is safe to use in hostas and day lily plants.
     

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    2 of 3 people found this answer helpful.
  • Asked by Dean from Monroe City, Mo
    03/23/2021
    Q
    I have a one acre plot of Ladino clover and sweet clover for My Bee's I want to kill the fesque in th plot ,
    without harming My Bee's
    A

    The Grass Out Max is labeled for controlling Tall Fescue and would be safe sprayed over the top of broadleaf plants such as clover. While the product is not an insecticide, it would be recommended to avoid spraying when bees are active or foraging, such as very early in the morning or very late at night.  We would also recommend not applying when clover is in bloom as this is when they would be most active.

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    2 of 2 people found this answer helpful.
  • Asked by Nick from Louisiana
    10/25/2017
    Q
    Can Grass Out Max be used on a centipede lawn to control bermuda and torpedograss without harming the centipede?
    A

    Grass Out Max is not labeled as safe to be used on Centipede lawns nor is it labeled to target torpedograss. Bonide Grass Beater Over the Top Grass Killer, however, is labeled for use on centipedegrass and will target bermuda and torpedograss, as well as many other grass species. 

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    2 of 2 people found this answer helpful.
  • Asked by Jeff from Ct
    04/22/2021
    Q
    If killing the old grass and replanting new grass seed, will Grass Out Max (Clethodim Herbicide leave a residual in the soil that will prevent new grass seed from germinating?
    I'm looking for a quicker way to kill the existing grass so the tiller process can be quicker. If this does leave a residual in the soil, can I add 1 or 2" of fresh soil on top that will help the new grass seed germinate?
    A

    If you are looking to kill all existing grass/plants in an area so that you can reseed with a new or different type of grass, the best way to do this is with any Roundup or non selective type product. Roundup and similar items on the market like X-Out and Avenger will will burn down the existing vegetation and break down in the soil within 1-2 weeks to allow you to replant without fear of damage to the new seed.

    Grass Out Max would require you wait at least 30 days after an application before planting new seed. If you wanted to bring in fresh soil that does not have chemical residual in it you are welcome to do that. 

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    1 of 1 people found this answer helpful.
  • Asked by Kevin from Alton, Va
    05/04/2021
    Q
    Will Grass Out Max (Clethodim Herbicide) kill onion or beet if sprayed on them?
    A

    No, Grass Out Max (Clethodim Herbicide) is meant to control annual or perennial grasses that may grow in or around onion and beet crops. 

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    1 of 2 people found this answer helpful.
Displaying 61 to 80 (of 170 questions)