Tenacity Herbicide - Questions & Answers

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  • Asked by Marty from Meriden Ct. 06450
    09/24/2015
    Q
    Sprayed lawn last night with Tenacity Herbicide to rid it of Bentgrass. When can I start cutting and watering it?
    A

    You can water the lawn after the the Tenacity Herbicide has dried. You can mow your established lawn 2 days after Tenacity Herbicide application. 

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    37 of 40 people found this answer helpful.
  • Asked by Dottie from Rotonda West, Florida
    10/22/2018
    Q
    Is Tenacity safe to apply to St. Augustine grass to kill crabgrass?
    A

    Tenacity Herbicide is only labeled for use on St. Augustine grass that is grown on sod farms.  It cannot be used on St. Augustine in residential lawns.  Blindside WDG Herbicide is labeled to treat crabgrass in residential St. Augustine lawns.

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    35 of 74 people found this answer helpful.
  • Asked by Roland from York, Pa
    07/23/2012
    Q
    Will Tenacity control Nutsedge grasses?
    A
    Tenacity is labeled for control of Yellow Nutsedge grass only. Tenacity does not cover other species of nutsedge. We do carry Sedgehammer which was specifically formulated for nutsedge control.
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    34 of 35 people found this answer helpful.
  • Asked by Per
    08/14/2013
    Q
    Nimblewill and Crabgrass Post Emergent Treatment - Rain
    I want to do Post-Emergent Treatment of Nimblewill and Crabgrass cool season turf with mix of KYB, Fesue and Rye. What is the amount of time the Tenacity should dry before rain or irrigation? Should it be irrigated for Post-Emergent treatment? The overall area to be treated is 4300 sq ft. The weeds are dense in a 1600 sq ft area and then sparse (spot treat) through the rest of the turf . Is the dense weed area considered spot treatment, so that 1/2 tsp per gallon or is it consider large area treatment using the higher rate of 1 tsp per gallon ?
    A
    After treating with Tenacity you want the product to have at least 6 hours of dry time before any rain or irrigation occurs. You do not want/need to water after a post emergent application. We recommend using the spot treatment rate of Tenacity in the dense areas so as to not cause damage to your lawn. Tenacity is known due to its power to even with an accurate application to sometimes temporarily whiten the turf surrounding the weed areas. The color will normally return within 3-4 weeks so to minimize the chance of turf discoloration you will want to use the lower dose at first and be cautious to not overlap or too heavily apply the product. Please let us kow if you have any other questions.
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    33 of 36 people found this answer helpful.
  • Asked by Jon from Miller Place
    05/24/2018
    Q
    How long after using Tenacity Herbicide will I see results?
    A

    When using Tenacity, foliage of treated weeds cease growth after application, then turn white (loss of chlorophyll) and death may take up to three weeks. A repeat application is required after two to three weeks for improved postemergence weed control. 

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    32 of 35 people found this answer helpful.
  • Asked by Srchief from Lehighton, Pa
    05/24/2017
    Q
    Can you apply Tenacity in the middle of the summer?
    A

    Yes, Tenacity can be applied in the summer.  Keep in mind that the best temperature range to apply most herbicides, including Tenacity, is between 65-85 degrees.

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    32 of 33 people found this answer helpful.
  • Asked by R.bevans from Lasalle, Colorado
    08/18/2011
    Q
    What is the chemical Tenacity?
    A
    Tenacity is a systemic preemergence and postemergence herbicide for the selective contact and residual control of weeds in turfgrasses. Tenacity contains the active ingredient Mesotrione.
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    32 of 33 people found this answer helpful.
  • Asked by Fred from Edgewood, Ky
    09/09/2016
    Q
    How long should I wait to re-seed after I used Tenacity Herbicide?
    I had a lot of thick patches of nimble weed in my yard, I put on tenacity and it kill the nimble weed, but now it is brown.
    A

    There is no wait time after applying Tenacity Herbicide to re-seed unless you are re-seeding with fine fescue. For fine fescue, it is recommended that you wait at least 30 days after application to re-seed.

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    30 of 32 people found this answer helpful.
  • Asked by Kyle
    04/25/2012
    Q
    If Tenacity is applied to a pasture how long do you need to wait before allowing grazing?
    A
    We contacted the manufacturer Syngenta since Tenacity is not labeled for use on pasture land and they told us that you would need to wait 90 days before turning animals out to graze in treated pastures.
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    29 of 31 people found this answer helpful.
  • Asked by John from Arlington, Va
    06/28/2016
    Q
    Could I apply Tenacity if the weed leaves are wet? Do I need to wait until the weed leaves are dried?
    A

    It would be best to wait to apply Tenacity Herbicide once the leaves have dried. Be sure to mix in a surfactant like NonIonic Surfactant

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    29 of 35 people found this answer helpful.
  • Asked by Darl
    05/23/2018
    Q
    Will Tenacity Herbicide kill wild violets?
    A

    Yes, Tenacity Herbicide is labeled for wild violets. The rate for 1000 square feet is 1 teaspoon.

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    29 of 31 people found this answer helpful.
  • Asked by Mark from Southington, Ct
    04/25/2015
    Q
    What is the shelf-life of Tenacity Herbicide?
    I plan to use this for spot treatments on small areas of bentgrass. Using only 1/2tsp per gallon, an 8oz bottle is going to last me at least a few years. What is the shelf-life of this product?
    A
    If stored in a cool dry area,  Tenacity Herbicide will last up to 3 years. 
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    28 of 32 people found this answer helpful.
  • Asked by James from Abingdon, Va
    07/04/2017
    Q
    How long does Tenacity Herbicide last as a pre-emergent?
    A

    Tenacity Herbicide does not last long as a pre-emergent, maybe about 30 days.  It does state on the prodouct label also to use straight pre-emergent products like Prodiamine for long residaul control as a pre-emergent.

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    27 of 28 people found this answer helpful.
  • Asked by John from Great Neck, Ny
    11/21/2015
    Q
    How low can the temperature be for Tenacity application to be effective?
    A

    Tenacity will be most effective when temperatures are around 55 degrees. A non-ionic surfactant should be added in post-emergence applications.

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    27 of 32 people found this answer helpful.
  • Asked by Nabil from Logan, Ut
    07/19/2016
    Q
    What is the range of temperature at which one can apply Tenacity Herbicide?
    A

    Tenacity Herbicide is best applied before temps reach above 80 degrees but above 55 degrees.

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    25 of 25 people found this answer helpful.
  • Asked by John from Lincoln, Ne
    08/27/2016
    Q
    How late in the year can Tenacity Herbicide be applied?
    I purchased Tenacity from you earlier this year. I applied it twice in June, two weeks apart. The nimblewill got a little white, but came back strong. I haven't been able to reapply it because we've had grandkids around. How late can I use it again? How much should I use in a one gallon sprayer? I also purchased and used the Spreader Sticker. Thanks!
    A

    Tenacity Herbicide is a pre and post emergant so it can be applied at any time of the year, where the weeds and grasses you are treating are still actively growing with temps consistently above 55 degrees.  Per the product label you would use .5 tsp of tenacity in one gallon of water.  

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    25 of 27 people found this answer helpful.
  • Asked by Joe from Omoha
    10/25/2015
    Q
    Can Tenacity be used without a surfactant?
    A

    Tenacity should be applied with a non-ionic surfactant to achieve the best results. Please refer to the product label instructions for details on mixing and application.

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    25 of 29 people found this answer helpful.
  • Asked by John from Eighty Four, Pa
    04/17/2017
    Q
    Will Tenacity Herbicide kill Poa Annua and leave my rye and blue grass alone?
    A

    Tenacity Herbicide is not labeled to control Poa Annua/Annual Bluegrass in a post emergent application, it only states that it could cause injury to it if sprayed. Kentucky bluegrass and ryegrass are tolerable to it so would not be harmed.  It is only labeled to be used for suppression of poa annua when used as a pre-emergent.  Unfortantely there is not a post emergent product that would remove it and not harm the KGB as they are too similar.  We recommend that you spot treat the poa annua using a non-selective herbicide such as GlyPhoSel Pro. Your best option for poa annua is to use a pre-emergent herbicide more suited to preventing it like the Prodiamine 65 WDG.

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    24 of 26 people found this answer helpful.
  • Asked by Robert from Alexandria, Va
    06/28/2016
    Q
    Can Tenacity be applied on weeds that are still wet because of the prior rain?
    A

    It would be best to wait to apply Tenacity Herbicide once they have dried. Be sure to mix in a surfactant like NonIonic Surfactant

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    23 of 28 people found this answer helpful.
  • Asked by Alphonse from Austin, Texas
    02/28/2012
    Q
    Can I use Tenacity on Buffalo and St. Augustine grass?
    A
    Tenacity is labeled for use in both St. Augustine grass and Buffalo grass. Be sure to read and follow the Tenacity product label for best results.
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    22 of 27 people found this answer helpful.
Displaying 41 to 60 (of 467 questions)