Grass Out Max (Clethodim Herbicide) - Questions & Answers

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  • Asked by John from Seneca, Sc
    05/25/2018
    Q
    I want to use Grass Out Max (Clethodim Herbicide) to kill grass but not newly planted clover.
    I'm confused about the statement only in the States of Idaho, Oregon, and Washington. Your Q&A isn't any help on this. Can you send me a sample to try on a small area so that I can be sure it doesn't kill my clover?
    A

    We apologize,  but we are not able to send out samples of  Grass Out Max.  The manufacturer has only registered it for use on clover in the listed states.  When used as directed it will not kill clover and will kill grass only.

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    5 of 7 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 Al from Camarillo
    01/28/2016
    Q
    Will Grass Out Max also kill the sod where I am trying to kill annual blue grass invading my lawn?
    would like to kill the blue grass invading my sod grass
    A

    While you did not state what kind of grass is in the sod that you have down, the 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 sod lawn and instead you would want to go with a product that is selective in either a pre or post emergent form. If you let us know what kind of lawn/sod you have, we can find a product that would better suit your needs.

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    5 of 10 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 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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    4 of 6 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 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 states on the product label that juniper is sensitive to applications.  Fusilade would be an alternative to use.
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    4 of 6 people found this answer helpful.
  • Asked by Charles from Piedmont
    10/03/2018
    Q
    What is the mix ratio of Grass Out Max to a gallon of water?
    A

    You will need to use 0.2-0.4 fl oz of Grass Out per 1,000 sq ft area. Like most other herbicides the exact amount of water you use is not important, it is just important to make sure you get the specified amount of product over a 1,000 sq ft area. For ease of mixing/measuring you can add the specified amount of product to 1 gallon of water to apply to a 1,000 sq ft area.

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    4 of 9 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 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 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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    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 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 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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    4 of 6 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 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 Phillip from Bruce, Ms
    06/15/2012
    Q
    Will Grass Out Max harm string beans?
    A
    Since string beans are not specifically listed on the product label we checked with the manufacturer and they confirmed that Grass Out Max will not harm string beans when used as directed on the product label.
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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 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.
Displaying 41 to 60 (of 185 questions)