Tenacity Herbicide - Questions & Answers

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  • Asked by Ceasar from Splendora, Tx
    02/01/2018
    Q
    How many times per year can I spot treat using Tenacity?
    A

    There is not a specific limit on the number of spot treatments that you can make using Tenacity Herbicide as long as you do not exceed the annual maximum of 16 oz Tenacity per Acre or per crop. Typically you would wait at least 2-3 weeks between applications to the same areas. Be sure that you follow all the product label instructions as far as timing with seeding and other restrictions.

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    4 of 6 people found this answer helpful.
  • Asked by Keith from Tampa, Fl
    02/12/2018
    Q
    Can I broadcast spray my entire St. Augustine lawn with Tenacity Herbicide or should I only spot-treat?
    A

    Tenacity Herbicide is labeled for use on St. Augustine grass that is grown for sod only, not for use on residential St. Augustine lawns. Hi-Yield Atrazine Weed Killer is a pre- and post-emergent herbicide that can be used on St. Augustine lawns for a wide variety of weeds. 

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    4 of 9 people found this answer helpful.
  • Asked by Dominick from Nj
    05/05/2018
    Q
    Can i use Tenacity as a pre emergent for poa annua while overseeding with tall fescue and KBG?
    A

    Per the label of Tenacity Herbicide, this product can be applied at the same time of seed, except fine fescue. It is also recommended that you mow at least two days before and/or two days after.

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    4 of 5 people found this answer helpful.
  • Asked by John from Pulaski
    05/22/2018
    Q
    Can you mix insecticide with Tenacity?
    A

    It is not recommended to mix certain insecticides with Tenacity Herbicide.  You should wait to apply organophosphate or carbamate insecticides 7 days after treating with Tenacity Herbicide to avoid potential turf injury. Other active ingredients would be fine to use at the same time.

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    4 of 4 people found this answer helpful.
  • Asked by Scot from Harrisburg, Pa
    06/13/2018
    Q
    Did I just kill my garden plants by spraying them with Tenacity Herbicide?
    I have a lot of ornamental (sea) grasses, and just sprayed Tenacity over all my beds, in an effort to suppress an overgrowth of weeds. I also have seedling Crepe Myrtle bushes. Should I be worried, and is there anything that will counter-act Tenacity on a mis-sprayed plant?
    A

    Tenacity Herbicide should not be used around or on desirable ornamentals and/or trees or used within 3 feet of trees or ornamentals.  Unfortunately, there is not a product that can be used to reverse the effects of the Tenacity sprayed on intolerant plants. 

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    4 of 5 people found this answer helpful.
  • Asked by Kevin from Sc
    07/15/2018
    Q
    Does Tenacity kill nimbleweed?
    A

    Tenacity Herbicide is labeled for post-emergent control of Nimbleweed to established cool season turf. Per the product label, you may need a second application after 2 to 3 weeks. Apply to young, actively growing weeds, and be sure to use a surfactant such as Southern Ag Non-Ionic surfactant for post-emergent applications.

     

     

     

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    4 of 4 people found this answer helpful.
  • Asked by Nike from Michigan
    08/06/2018
    Q
    Will Tenacity Herbicide affect any other cool season grasses?
    I sprayed to kill bentgrass and it has worked but I believe it turned some of my other grass, like fescue white as well.
    A

    Tenacity Herbicide may cause temporary whitening of turfgrass foliage. In general, symptoms appear five to seven days after application and last for several weeks. A repeat application to the same site causes less whitening of the plant tissue.

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    4 of 4 people found this answer helpful.
  • Asked by Larry from Cowlesville, Ny
    08/09/2018
    Q
    For spot spraying crabgrass with Tenacity Herbicide, can a dye be used?
    A

     

    Tenacity Herbicide would be a great option for you to control crabgrass, and yes it is advised to use a dye like Turf Mark Blue with it so you can make sure to not overlap if you plan to do a broadcast application on the property. 

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    4 of 5 people found this answer helpful.
  • Asked by Nike from Michigan
    09/05/2018
    Q
    Can Tenacity Herbicide be used to treat bentgrass on new cool-season grasses I planted about 3 weeks ago?
    A

    You will want to wait until the newly germinated turf has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence application with Tenacity Herbicide to the new cool season turf. For the most effective Bentgrass control, you will need to reapply Tenacity Herbicide at two to three-week intervals for up to three applications. Be sure to apply with a NIS surfactant. Making applications in late summer/early fall just before new growth is very effective in controlling bentgrass. 

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    4 of 4 people found this answer helpful.
  • Asked by Henry from Schenectady, New York
    10/12/2018
    Q
    Can Tenacity Herbicide be applied with a hose-end sprayer?
    A

    It is not recommended to use a hose-end sprayer to treat your lawn with Tenacity Herbicide or any other herbicide. The problem with using hose-end sprayers is that they are not very accurate and you can wind up dispensing more or less product than recommended per area and that can lead to less than desirable results.

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    4 of 4 people found this answer helpful.
  • Asked by Allen
    11/30/2018
    Q
    Can Tenacity be applied to Kentucky Bluegrass to control invasive fescue?
    I had some bugs and or mold kill small patches of the lawn. Fescue grew in and filled those bare spots. Will tenacity kill the invasive fescue? Can Tenacity be applied in the winter or fall as a pre-emergent?
    A

    Tenacity Herbicide is labeled for use on Tall Fescue, Kentucky Bluegrass, Centipedegrass, Buffalograss, Perennial Ryegrass, Fine Fescue, St. Augustine Grass, so no it will not kill the fescue in your Kentucky Bluegrass lawn.  Tenacity is a systemic pre-emergent and postemergent herbicide for the selective contact and residual control of weeds in turfgrasses. When applied as a pre-emergent, Tenacity Herbicide should be applied before soil temperatures reach 55 degrees. 

    You can spot treat the fescue with a non-selective herbicide such as Killzall and reseed with bluegrass.

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    4 of 6 people found this answer helpful.
  • Asked by Anthony from Bridgewater, Nj
    03/31/2019
    Q
    Can Tenacity be applied as a pre emergent while it is raining out?
    A

    For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.

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    4 of 5 people found this answer helpful.
  • Asked by Fred from Newport
    04/03/2019
    Q
    Can Tenacity be used for Nimblewill?
    A

    Tenacity Herbicide is labeled for application for post-emergent control of Nimbleweed to established cool season turf. Per the product label, you may need a second application after 2 to 3 weeks. Apply to young, actively growing weeds, and be sure to use a surfactant such as Southern Ag Non-Ionic surfactant for post-emergent applications.

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    4 of 4 people found this answer helpful.
  • Asked by Tom from Michigan
    04/06/2019
    Q
    Does the soil have to be above a certain temperature to use Tenacity?
    A

    Tenacity Herbicide may be applied when soil temperatures are around 55 degrees or higher for post emergent control.  If you are using a pre-emergent you would need to apply before soil temps reach 55 degrees.

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    4 of 4 people found this answer helpful.
  • Asked by John from Farmington, Mi
    04/11/2019
    Q
    Looking to spray Tenacity for creeping Bentgrass, what is the best temperature to spray?
    it is spring here in MI - temperatures fluctuating between 50-60 degrees. Would it be okay to spray this product at these temps for creeping Bentgrass?
    A

    The best temperature range to apply most herbicides, including Tenacity, is between 65-85 degrees. 

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    4 of 5 people found this answer helpful.
  • Asked by Christina from Kirkland
    06/22/2019
    Q
    Can Tenacity Herbicide and a non ionic surfactant be applied in a mist blower/fogger?
    A

    Tenacity Herbicide should not be applied in a mist blower/fogger. It can be applied with a hand pump sprayer or backpack sprayer for more accurate applications to the listed turf.

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    4 of 5 people found this answer helpful.
  • Asked by Cheryl from Wilmington, Nc
    06/18/2014
    Q
    Is 90 degrees too hot to apply Tenacity to a St. Augustine lawn.
    A
    We do not recommend applying herbicides including Tenacity Herbicide in temps over 90 degrees.
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    3 of 3 people found this answer helpful.
  • Asked by Jim from Northern Virginia
    04/13/2015
    Q
    I have what a landscape person called Rough Stalk Bluegrass, a Canadian Hybrid or Poa Trivilais.
    There are patches in my yard that have a bright greenish color. It really stands out. Will Tenacity take care of this.
    A
     Tenacity Herbicide is labeled to take care of this. Be sure to mix a surfactant like Non Ionic surfactant to help promote the product to stick.  
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    3 of 5 people found this answer helpful.
  • Asked by Jeffrey from Trumbull
    05/10/2015
    Q
    Will Tenacity damage Poa trivialis lawngrass?
    I have Poa Triv in shady areas and need to get rid of invasive creeping bent in my lawn.
    A
    The product label for Tenacity does not specify whether it would harm poa trivialis. Both bentgrass and poa annua may be sensitive to Tenacity, while Kentucky Bluegrass is listed as tolerant. Certainty Herbicide is labeled to control poa trivialis, but we are not certain if it would harm the bentgrass. The best option for you is to spot treat the rough bluegrass with RoundUp QuickPro and then reseed with the desirable turfgrass.
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    3 of 6 people found this answer helpful.
  • Asked by Mike from Rockford, Il
    04/28/2016
    Q
    How soon after a pre-emergent appication of Tenacity can I apply a post-emergent spray of Tenacity?
    A

    After further information from the manufacturer they have verified that to making a pre-remergent application with Tenacity you will need to apply a post emergent application once you detect germination of the weed itself. Syngenta recommends to apply no more than 3 application per year. 

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    3 of 3 people found this answer helpful.
Displaying 301 to 320 (of 621 questions)