Grass Out Max (Clethodim Herbicide) - Questions & Answers

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  • Asked by Matthew from New Baltimore Mi.
    07/08/2019
    Q
    Can Grass Out Max (Clethodim Herbicide) be used on chicory?
    A

    Grass Out Max (Clethodim Herbicide) does list chicory on the product label as tolerable when used as directed on the label for targeted grassy weeds.

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    5 of 5 people found this answer helpful.
  • Asked by Ron from Birmingham, Al
    06/09/2019
    Q
    Can Grass Out Max be used in a vegetable garden?
    A

    Yes, Grass Out Max can be used on the vegetables listed on the product label.  

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    5 of 5 people found this answer helpful.
  • Asked by John from North Little Rock
    03/14/2021
    Q
    Is Grass Out used for warm weather or cool weather? What is the temperature range?
    A

    Grass Out Max will work best when plants are young, but actively growing. You can make applications usually starting around 60 degrees when the plants first start growing and continue to make applications until temps reach about 85 degrees but no higher or you can cause damage to desirable growth. 

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    5 of 6 people found this answer helpful.
  • Asked by David from Cape Coral, Fl, 33909
    05/21/2014
    Q
    What type of herbicide is beset for Johnsongrass?
    It is around all of the bushes around the house on 2 1/2 acres coming up through medium sized river rock.
    A
    Grassout Max is labeled to control Johnsongrass and will not harm any ornamentals or bushes that you spray it over. According to the product label you will want to use between 12-24 oz per acre. If you use the highest dilution ratio which is often needed for something as hard to control as johnsongrass, you would use roughly 0.54 ounces per 1000 sq/ft feet in no less than 2 gallons of water to get sufficient coverage through the rocks to the roots in the soil below.
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    4 of 5 people found this answer helpful.
  • Asked by Jesse from Ontario, Ca
    04/01/2019
    Q
    Can I use Grass Out to kill fescue growing in my bougainvilleas and rose bushes?
    A

    Yes!  Grass Out Max (Clethodim Herbicide) is designed specifically for killilng grassy weeds including fescue in ornamental areas without harming desirable shrubs and roses.

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    4 of 5 people found this answer helpful.
  • Asked by Olli from Fulshear, Tx
    04/19/2017
    Q
    Will Grass Out Max (Clethodim Herbicide) kill nut grass/nut sedge around a newly planted tree?
    A

    Grass Out Max (Clethodim Herbicide) will NOT control sedges. Sedgehammer would be a better choice to apply around a newly planted tree. Be sure to apply on a less windy day since Sedgehammer may damage desirable shrubs and ornamental plants.

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    4 of 5 people found this answer helpful.
  • Asked by Maria from Driggs, Idaho
    04/21/2017
    Q
    Will Grass Out Max harm vinca?
    A

    Per the product label, Grass Out Max is safe to apply around vinca.

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    4 of 5 people found this answer helpful.
  • Asked by Terry from Perrysburg, Ny
    05/15/2017
    Q
    Is a surfactant recommended for use with Grass Out Max?
    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 including strawberries. Please refer to the product label for complete usage instructions for your application. The manufacturer does recommend adding a surfactant for better results. 

    If you are using Non Ionic Surfactant you would mix 2 tsp per surfactant with approx. .4 oz Grass out in one gallon water over 1000 sq feet. Please let us know if you have any more questions.

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    4 of 6 people found this answer helpful.
  • Asked by Carol from Davenport, Fl
    03/30/2019
    Q
    Will Grass Out Max (Clethodim Herbicide) kill sandspurs?
    A

    Grass Out Max (Clethodim Herbicide) is labeled to control field sandbur aka sandspurs in ornamental areas only.  

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    4 of 4 people found this answer helpful.
  • Asked by Kirk from Prairie Du Chien
    02/05/2019
    Q
    Can I use Grass Out Max on a woodland tree planting to kill the grass around trees like oak, walnut, and maple?
    When is the best time? At green-up?
    A

    Yes, you can use Grass Out Max to control invasive grasses around your Walnut, maple, and Oak trees.  The best time to apply is when the grass is young and actively growing.  

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    4 of 5 people found this answer helpful.
  • Asked by Jeremy from Ferdinand
    07/03/2017
    Q
    Will Grass Out Max be safe to use in my food?
    I planted a mix of clover, chicory and alfalfa in my food plots.
    A

    Grass Out Max (Clethodim Herbicide) is tolerable over clover, alfalfa and chicory to kill grassy weeds when used as directed on the product label.

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    4 of 5 people found this answer helpful.
  • Asked by Peggy from California
    10/27/2017
    Q
    Can Grass Out Max be used to control bermuda grass in flower beds?
    A

    Yes, Grass Out Max can be used to control bermuda grass in flower beds. 

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    4 of 5 people found this answer helpful.
  • Asked by Michael from Parrish, Fl
    09/04/2018
    Q
    Can you recommend a herbicide I can spray on my bushes to kill the grasses that grow up the middle.
    A

    Grass Out Max (Clethodim Herbicide) is a good option for spraying around ornamentals and will only kill grasses.  Please refer to the product label to confirm your bushes are listed as tolerable to the product.

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    3 of 3 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 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 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 Justin from Olpe
    04/17/2019
    Q
    Can Grass Out Max (Clethodim Herbicide) be used on clover food plots without killing the clover?
    A

    Grass Out Max would not harm clover but it is currently only labelled for use on clover when used in the states of Idaho, Oregon, and Washington.  Arrest Max contains the same active ingredient but does not have any state restrictions for clover.  

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    3 of 3 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 Barbara from Walworth, Ny
    04/24/2019
    Q
    I have grass overtaking my berms of blue rug junipers. Will Grass Out Max harm my junipers?
    A

    Grass Out Max will not harm juniper when used as directed on the product label.

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    3 of 5 people found this answer helpful.
  • Asked by Al from Camarillo
    01/28/2016
    Q
    Will Grass Out Max kill my rose bushes?
    Annual blue grass is invading my rose bush planters.
    A

    Grass Out Max (Clethodim Herbicide) is a great choice for killing annual blue grass (poa annua) in ornamental beds as long as the non-target plants are well established. Per the product label, be sure to use a non-ionic surfactant with at least 80% active ingredient, although crop oil surfactants are not recommended around flowers to prevent sensitivity. Please review the product label before application.  If you are only experiencing problems in planters, then you may need to examine whether weeds are coming up from the ground below them, in which case you should move and/or add a barrier under or inside the planters. Transplanting or changing the potting soil would also ensure no new growth of unwanted plants.

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    3 of 4 people found this answer helpful.
Displaying 41 to 60 (of 170 questions)