Grass Out Max (Clethodim Herbicide) - Questions & Answers

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  • 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 4 people found this answer helpful.
  • Asked by Rich from Stevensville
    05/05/2019
    Q
    Can Grass Out Max still be used even if it became frozen during winter months?
    A

    We do not recommend storing Grass Out Max or any other insecticide where there are extreme temperatures. Store products in cool, dry place for the most effective results. If it hs been frozen, we suggest getting fresh product.

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    3 of 3 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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    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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    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 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 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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    2 of 2 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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    2 of 2 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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    2 of 4 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 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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    2 of 2 people found this answer helpful.
  • Asked by Kevin from Alton, Va
    07/19/2019
    Q
    How long after spraying Grass Out Max can you pick vegetables for human consumption?
    A

    Per the product label for Grass Out Max :  The minimum time from application to harvest is 4 days.  Be sure to rinse well before consuming.

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    2 of 2 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 2 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 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 Harold from Plymouth, Nc
    01/05/2013
    Q
    Can Grass-Out Max (clethodim herbicide) be used in a Centipede lawn to kill bermuda grass?
    A
    Since Grass Out is a grass killer in general we do not recommend you try to broadcast spray it over your centipede lawn as it may cause damage. We have heard of many people using Atrazine to control Bermuda grass that is invading a centipede lawn, though because this is actually an off label usage we cannot say for sure that it will work. You can also choose to spot treat the bermudagrass growth with a glyphosate product and just reseed int hose areas.
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    1 of 2 people found this answer helpful.
  • Asked by Cliff from Randleman Nc
    06/13/2014
    Q
    Is it ok to use Grass Out Max if you have well water?
    A
    Grass Out Max should not leach into the soil but we recommend that you speak to the manufacturer for more information. Please contact Agrisel at 1-877-AGRISEL.
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    1 of 2 people found this answer helpful.
  • Asked by Noah from Ellicott City, Md
    06/19/2014
    Q
    Does this work on wavyleaf basketgrass in the woods and my lawn, and what ratio/surfactant/crop oil to use??
    Assuming Grass Out will work on wavyleaf packing grass and/or Japanese stiltgrass, what mix ratio should I use? Also, what surfactant or crop oil concentrate, if any, do you recommend, and in what ratio(s)? The grass to be killed is in the woods, with some of it starting to creep into my lawn. Thanks!
    A
    Wavy Basketgrass is a relatively new invasive species that is hard to control. Unfortunately, the Grass Out Max is not specifically labeled for Wavy Basketgrass so we can't say for certain whether it will work but many Master Gardeners and Universities highly recommend Clethodim or Glyphosate based herbicides such as Grassout Max and RoundUp Quick Pro. Please note that the Grassout Max and the RoundUp Quick Pro will kill grass/turf that it is sprayed on so you will need to reseed the affected area of your lawn.
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    1 of 2 people found this answer helpful.
  • Asked by Dd from Loyola Beach, Texas
    10/23/2014
    Q
    Okay to use around cactus, agaves, and aloes?
    Is Grass Out Max safe to use around cactus, agaves, aloes and/or other plants similar to cactus and succulents?
    A
    We are unsure of the effects of Grass Out Max on succulents. We would recommend that you contact the manufacturer, Agrisel at 877-247-4735.
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    1 of 2 people found this answer helpful.
  • Asked by Terry from Covina, Ca
    04/26/2015
    Q
    What's the difference in these two Clethodim grass killing products?
    "Grass Out Max" has active ingredient Clethodim at 25.4%. You also carry Select "Source PS Clethodim Herbicide" which shows 26.4% and specifically lists Bermudagrass BUT is not for sale in several states. What is the difference in these two? Does that extra percent qualify PS as prohibited? It's also nearly twice as expensive.
    A
    Grass Out Max and PS Clethodim are basically the same product with a very small variation of active ingredient percentage. However, this variation in the percentage of Clethodim does not determine eligibility for sale and/or shipping to certain states. Each state has a registration process for herbicides and in this case the manufacturer of PS Clethodim which is Prime Source has not registered their product in several states. Therefore, when a product is not registered with the state it may not be shipped or sold there. 
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    1 of 3 people found this answer helpful.
Displaying 61 to 80 (of 156 questions)