Tenacity Herbicide - Questions & Answers

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  • Asked by Jim from Fort Morgan, Co
    05/04/2015
    Q
    In one answer about watering you state it does not need to be watered in because it is mixed with water;
    however, in another answer you state it does, indeed need to be watered in asap. could you please clarify which is correct. Thank you.
    A
    Tenacity is a systemic preemergence and postemergence herbicide for the selective contact and residual control of weeds in turfgrasses. When applied as a preemergent, weeds absorb Tenacity during emergence from the soil. Dry conditions following application may reduce the preemergence activity. If rainfall (0.15 inches) has not occurred within 10 days after a preemergence application, activate with 0.15 inches of irrigation. When used as a postemergent, susceptible weeds absorb Tenacity through foliar contact and soil absorption. Therefore, you should water in Tenacity when using it as a preemergent herbicide but it does not need to be watered in when using it as a postemergent herbicide.
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    800 of 830 people found this answer helpful.
  • Asked by Wayne
    04/21/2015
    Q
    How soon can I mow my lawn after an application of Tenacity?
    A

    You can mow your lawn 2 days before application of Tenacity Herbicide and 2-3 days after application. 

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    633 of 650 people found this answer helpful.
  • Asked by Lori from Keokuk, Ia
    07/20/2015
    Q
    After spraying Tenacity Herbicide, when the weeds turn white, do you pull them or just reseed?
    I was told I had nimblewill in my yard. It was a large portion with green blades and brown plus some other weeds. I purchased tenacity from you and applied it. The areas that were brown and green haven't turned white but the are scattered portions of other weeds that have. Does that mean anything? Also, am I supposed to pull them after they turn white and reseed?
    A

    After spraying with Tenacity Herbicide, the 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. We would not recommend pulling up any weeds because the product will not get into the root system, and the weeds may come back at that point.

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    607 of 652 people found this answer helpful.
  • Asked by Douglas from Winter Haven, Fl
    10/25/2015
    Q
    What is the amount of Tenacity per gallon for application on a St. Augustine lawn per 1,000 sq ft?
    The label only discusses per acre application. How do you break that down per gallon in a sprayer or per 1000 sq ft application? I am using a 4 gallon backpack sprayer.
    A

    According to the Tenacity product label for smaller applications, you will need to mix 0.5 tsp of Tenacity and 1.5 tsp of surfactant to one gallon of water covering 1,000 sq ft.

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    545 of 583 people found this answer helpful.
  • Asked by Mary from Marshfield, Wi
    10/11/2011
    Q
    Do I need to keep the dogs away from the area where I have applied Tenacity?
    A
    You should keep the dogs off of the area while you are applying Tenacity and until the area has had a chance to dry, about 2-4 hours.
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    494 of 506 people found this answer helpful.
  • Asked by Frank from Plattsmouth, Ne
    06/09/2015
    Q
    What is the maximum application temperature for Tenacity?
    Heat spell, but I need to get a second spraying on the weeds in the buffalo grass before it rains for the next week or two. Want to know if I can spray it at exterior temps over 90 degrees.
    A
    Tenacity Herbicide should not be applied to the lawn when temperatures are over 90 degrees or on day when you are expecting rainfall.
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    405 of 422 people found this answer helpful.
  • Asked by Marlin from Evansville, In
    07/25/2015
    Q
    Would it be OK to apply Tenacity Herbicide in the evening, after it cooled down for the day?
    No application above 80 deg. Does that mean don't apply anytime when temps are consistently above 80 or just not at the exact time it's that hot? Would it be OK to apply in the evening, after it cooled down, even though it gets that hot during the day? Or should I wait a couple of months until consistently cooler temperatures set in?
    A

    When the label states that no applications should be made when temperatures are above 80 degrees, this means that the product should not applied when it is 80 degrees and above. Tenacity Herbicide can be sprayed in the evening time and/or early morning hours.

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    353 of 382 people found this answer helpful.
  • Asked by Ty from Spokane, Wa
    06/02/2015
    Q
    How long after application is Tenacity rainfast?
    Applied 4oz/acre to 30 day old seedlings and got 1.5" of rain a few hours later. Rainfall was quick enough to cause flooding, 1.5" in about 2 hours. Will the Tenacity application be effective?
    A
     Tenacity Herbicide will be rainfast 4 hours after it has been applied or after it has dried. 
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    325 of 341 people found this answer helpful.
  • Asked by Dale from Leesburg,va
    08/05/2013
    Q
    Is Tenacity Herbicide bad for pets?
    A
    Tenacity herbicide is safe to use in a yard will pets will frequent as long as they are out of the area during the application. They can safely return after the area has dried.
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    299 of 326 people found this answer helpful.
  • Asked by Thomas from Cut Off, La.
    03/10/2014
    Q
    What is the shelf life of Tenacity?
    A
    The shelf life on most liquid herbicides all depends on how they are stored. If the product has been tightly sealed and kept out of sunlight and extreme temperatures, the shelf life is 3-5 years.
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    256 of 269 people found this answer helpful.
  • Asked by P from Wisconsin
    05/30/2015
    Q
    Will food coloring work to mark areas on turf that I spot sprayed ?
    A
    Yes, some folks do use food coloring to mark where  Tenacity Herbicide has been applied. 
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    238 of 256 people found this answer helpful.
  • Asked by Ken from Martinsville, In
    08/09/2015
    Q
    Can Tenacity Herbicide be stored after mixing with water and surfactant for use at a later date?
    I mix Tenacity, a surfactant, and water in one gallon batches to spot treat my lawn using a pump sprayer. I frequently have part of a mixture left over when I finish treating. Can I store it for two weeks and use it for a follow up treatment?
    A

    Tenacity that has been mixed with water and a surfactant should be used within 24 hours of mixing and then discarded. If it is in its original container and stored away from extreme temperatures, it will have a three year shelf life unmixed.
     

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    234 of 254 people found this answer helpful.
  • Asked by Dale from Crete, Ne
    06/16/2016
    Q
    If it is 70 degrees in the morning and will get up to 95 in the afternoon, can I still apply Tenacity Herbicide?
    I noticed a question about temperature and application of Tenacity, you stated it can be applied up to 80 degrees. Is that during application?
    A

    When mentioning Tenacity Herbicide and temperature, we are referring to the temperature at time of application. If it gets above 70 degrees after your application has dried, that is okay. 

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    232 of 247 people found this answer helpful.
  • Asked by Linda from Mcmurray Pa
    09/14/2013
    Q
    Does Tenacity control creeping charlie?
    A
    Yes, Tenacity is labled to control Ground Ivy "Creeping Charlie" as post emergent control. We highly recommend using a temporary turf colorant like Turf Mark Blue so that you can see where you spray with the Tenacity to avoid overlapping. Tenacity is a great product, but also a very strong product so too much overlapping or mixing the product too strong can cause temporary damage and whitening to your turf around the ground ivy. The color will come back in the lawn after 3-4 weeks but to avoid this potential problem it is best to use a colorant to make sure no overlap occurs. To get optimum results for post emergent control it is recommended you use a Non Ionic Surfactant in your mixture as well.
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    191 of 199 people found this answer helpful.
  • Asked by Steve from Allison Park Pa
    06/14/2015
    Q
    Does Tenacity Herbicide need to be watered in after applying?
    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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    185 of 205 people found this answer helpful.
  • Asked by Scott from Grosse Ile Michigan
    03/08/2012
    Q
    After applying Tenacity and surfactant how long do you have to wait to seed or sod?
    A
    According to the Tenacity product label "Apply Tenacity at 5-8 fl. oz. per acre in at least 30 gallons of water per acre prior to seeding or post seeding of tolerant turfgrass species listed on this label, except fine fescue. Tenacity may reduce density of fine fescue seedings. Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. Apply at grass seeding or close to seeding for best performance. Avoid spraying on newly germinated turfgrass plants. Wait until the newly germinated turf has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence application." If you need more specific information on a turfgrass not mentioned on the product label you can reach the manufacturer at 866-796-4368.
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    177 of 245 people found this answer helpful.
  • Asked by Josh from Trumbull, Ct
    08/09/2017
    Q
    How soon can I reseed after using Tenacity Herbicide?
    Assuming it kills creeping bentgrass in a few weeks, or maybe longer if more applications are needed, how long should I wait before reseeding?
    A

    Tenacity Herbicide can be used at the time of seeding or right after for most grass types. Fine fescue is the only grass seed that should not be used at the time of application. It is recommended that you wait 2-4 weeks after an application of Tenacity Herbicide to reseed with fine fescue.

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    148 of 159 people found this answer helpful.
  • Asked by Mike from Wilton, Ct
    07/12/2015
    Q
    How long does Tenacity take to kill plants?
    I used the recommended spot treatment amounts of Tenacity with surfactant. Even applied 2nd treatment to most of it. Most leaves turned white as expected but not all and the weeds did not die. Now all it of appears to have recovered as most of it is a normal green. What do I do now? Try again? I am worried about applying too much but the nimblewill will not die but turned white.
    A

    The foliage of weeds treated with Tenacity cease growth after the application, then turn white (loss of chlorophyll), so 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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    143 of 183 people found this answer helpful.
  • Asked by Mike from Groton, Ma
    04/21/2014
    Q
    Is it possible to use a hose end sprayer to apply Tenacity?
    A

    Tenacity should not be applied with a hose end applicator. Tenacity if not applied evenly across the yard can temporarily whiten your lawn and cause you to not see full control of the weeds you want to eliminate. Also most hose end sprayers will not dial down to the small amounts needed per 1000 sq/ft that the Tenacity requires. Tenacity is best applied with some form of a pump/tank sprayer in even strokes without excess overlapping.

    According to the Tenacity product label you will need to mix 1 tsp of product + 3 tsp surfactant with 2 gallon of water for spot treatments, using 1 gallon per 1000 sqft.

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    128 of 139 people found this answer helpful.
  • Asked by John from Ames, Ia
    06/02/2013
    Q
    How long do I need to wait to start bagging my lawn for composting the clippings.
    I heard the product stays active even after composting and may harm my garden plants.
    A
    We contacted Syngenta which is the manufacturer of the product. According to Syngenta, once you have cut your grass, you would need to put the clipping in the compost pile and let it sit for at least 30 days. After 30 days the chemical has broken down in the clippings and can be used in other areas of the yard where you are growing garden plants.
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    124 of 132 people found this answer helpful.
Displaying 1 to 20 (of 465 questions)