Tenacity Herbicide - Questions & Answers

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  • Asked by Chris from Westchester, Il
    04/10/2018
    Q
    Do I apply Tenacity to dirt before laying sod?
    Whole lawn has lot of bentgrass I think. If I replace with new sod. Do you recommend using tenacity on the dirt before rolling out new sod.
    A

    If you are doing a full lawn renovation and wanting to kill existing plants before sodding, then we would recommend using a non-selective herbicide to clear the area before planting. You could use a product like RoundUp QuikPro for this application. Then after any existing plants have died and the lawn is prepared, you could put down your sod. We would suggest applying Tenacity after the sod is down as a pre-emergent (or post-emergent as needed) as long as the turf is one that is listed as tolerable on the product label. Keep in mind that the best time to use Tenacity for bentgrass will be in late Summer/early Fall.

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    5 of 6 people found this answer helpful.
  • Asked by Jim from Cincinnati, Oh
    04/10/2017
    Q
    Will Tenacity kill bermuda grass?
    A

    The product label states that Bermuda grass is sensitive to Tenacity but it would not be recommended as a product specifically used to kill it. 

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    5 of 7 people found this answer helpful.
  • Asked by Joel from Ri
    04/24/2017
    Q
    Can I kill rye grass with Tenacity Herbicide? I live in the Northeast.
    A

    No, Tenacity Herbicide will not eliminate ryegrass.  If you want to eliminate ryegrass in cool season turf, we would recommend using Turflon Ester Ultra. The mixing rate is 3/8 - 3/4 oz. per 1,000 sq. ft.

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    5 of 6 people found this answer helpful.
  • Asked by Mike from Puyallup, Wa
    07/20/2019
    Q
    Do I water in Tenacity?
    A

    You do not need to water after a post emergent application of Tenacity.

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    5 of 9 people found this answer helpful.
  • Asked by Bernard from Wray, Co
    09/03/2019
    Q
    Can Tenacity Herbicide be used on buffalo grass without damage?
    A

    Yes, Tenacity Herbicide is labeled for use on Buffalograss. 

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    4 of 4 people found this answer helpful.
  • Asked by Ray
    03/30/2020
    Q
    I applied Tenacity on my turf grass during the first week of March. At least 90% of the lawn is light yellow
    In color 3 weeks later. How long would it be before turf returns to green? I live in NJ.
    A
    Yellowing or whitening of the turf after a broadcast application of Tenacity Herbicide is caused by the loss of chlorophyll. The product label states, "Tenacity 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 6 people found this answer helpful.
  • Asked by Hugh from Lake Mary, Florida
    10/11/2015
    Q
    Is Tenacity Herbicide safe for Floratam?
    A

    Tenacity is labeled for use on St Augustine grown for sod only and would not be recommended on a home lawn. Could you tell us what you are trying to treat for and we can try to recommend a product that you can use?

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    4 of 9 people found this answer helpful.
  • Asked by Sylvia from Nashville, Tn
    09/29/2016
    Q
    How long after Tenacity application can I seed with an annual rye?
    I see instruction for perennial rye but not annual. I have decided to switch to Bermuda next year so a temporary rye lawn would be best for me this winter but I've already treated with Tenacity twice. How long until I can seed annual Rye? Or not at all?
    A

    When using Tenacity Herbicide there should be no issue with planting annual rye seed after using it. Per the product label you would want to apply either at seeding or close to it for the best performance. 

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    4 of 7 people found this answer helpful.
  • Asked by Paul from Walpole Ma
    09/03/2019
    Q
    Is Tenacity good for treating quackgrass? This perennial plant is a nuisance here in New England.
    A

    Tenacity is not labeled for quackgrass. The common recommendation is to kill the quackgrass with a glyphosate product like Roundup QuikPRO and then reseed with the desirable turf. 

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    4 of 4 people found this answer helpful.
  • Asked by Adam from Walkersville, Md
    08/05/2019
    Q
    How many teaspoons of Tenacity per 1000 square feet would be equal to the 5 oz per acre rate?
    Can’t seem to figure out the math or find a chart. Thank you.
    A

    If the use rate of Tenacity Herbicide is of 5 oz per acre, you’ll need to use 0.11 oz or 6/10 of a teaspoon per 1,000 square feet.

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    4 of 5 people found this answer helpful.
  • Asked by Serena from Berclair, Tx
    10/13/2015
    Q
    Does Tenacity work on nut grass?
    A

    Tenacity is labeled for postemergent control of nutsedge. However, the product label does state that weed control with postemergence applications require a second application after 2 to 3 weeks. You should also make sure that you apply the Tenacity to young, actively growing weeds with a non-ionic surfactant.

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    4 of 5 people found this answer helpful.
  • Asked by Brett from Canton, Ga
    07/23/2018
    Q
    What is the mix rate for Tenacity Herbicide on Fescue lawns?
    A

    According to the Tenacity product label for smaller applications, you will need to mix 1 tsp of Tenacity and 3 tsp of surfactant to 2 gallon of water, using 1 gallon each to cover 1,000 sq ft.

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    4 of 4 people found this answer helpful.
  • Asked by Scott
    08/06/2019
    Q
    What happens if you don't bag lawn clippings the first time after applying Tenacity?
    A

    It would be best if clippings were bagged after the first mow and application of Tenacity Herbicide.  Bagging will help with lawn health.

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    4 of 8 people found this answer helpful.
  • Asked by Reedy from Virginia
    08/16/2019
    Q
    Can Tenacity Herbicide kill growing ivy?
    A

    Tenacity Herbicide is labeled to treat for actively growing ivy. 

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    4 of 4 people found this answer helpful.
  • Asked by Cole from Hartford, Ct
    03/28/2017
    Q
    Can I use Tenacity in CT now?
    Here in Connecticut, can I apply Tenacity while the grass is still dormant and temps are in the 50's?
    A

    Tenacity Herbicide can be used if weeds are actively growing for post emergent control as long as the soil temperature is 55 degrees Fahrenheit. This product can also be used for pre-emergent control right now once the soil temperature reaches 55 degrees Fahrenheit. Be sure to water the product in at least 1/2 inch after a pre-emergent application to ensure the product gets down into the soil.

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    4 of 8 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 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 Joe from Woodbridge, Va
    09/12/2019
    Q
    Will Tenacity kill lespedeza?
    A

    Tenacity Herbicide is not labeled to prevent or eradicate lespedeza. Quali-Pro MSM Turf Herbicide may be a better option.

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    4 of 4 people found this answer helpful.
  • Asked by Brien from Cape Coral, Fl
    12/01/2017
    Q
    Can I use Tenacity to control crabgrass in Floratam?
    A

    Tenacity Herbicide is not labeled safe for use on Floratam species and is only for use on St Augustine grown for sod.  Atrazine or Blindside would be the alternative products to use.

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    4 of 5 people found this answer helpful.
  • Asked by Peter from Dallas, Tx
    03/30/2016
    Q
    Can Tenacity Herbicide be used to control Goosegrass on Bermuda?
    A

    Tenacity can be used on dormant bermudagrass for goosegrass. If the product is used on semi-dormant grass, it may harm the turf by turning it white. When treating for goosegrass with Tenacity, it is best used for post-emergent control. 

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    4 of 6 people found this answer helpful.
Displaying 261 to 280 (of 590 questions)