Tenacity Herbicide - 8 Oz.


Tenacity Pre and Post Emergent Herbicide

As both a pre- and post-emergent, Tenacity offers control of weeds both before they emerge from the soil’s surface and after they’ve appeared above the soil.

Mesotrione -- 40.0%
Other Ingredients -- 60.0%

The concentrate is specifically used for certain warm season and cool season turfgrass species listed on the product label: Kentucky bluegrass, centipedegrass, buffalograss, tall fescue, perennial ryegrass, fine fescue and St. Augustinegrass.

DO NOT use Tenacity on bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum and bermudagrass as these turfgrasses are sensitive to Tenacity applications. *For a list of weeds controlled, see product label.

Active ingredient: Mesotrione ......40.0%

How to Use Tenacity Herbicide

An eight oz. bottle of Tenacity can cover one to two acres of a property when broadcasting for weed control after mixing with 30 gallons of water per acre. A bottle of Tenacity will also come with a syringe for spot treatments.

Pre-Emergent Applications:

Apply Tenacity at four to eight fl. oz. per acre in at least 30 gallons of water per acre prior to weed seed germination. Do not exceed five fl. oz. per acre per application to perennial ryegrass or fine fescues or mixed stands that contain greater than 50 percent perennial ryegrass and/or fine fescue. Do not exceed four fl. oz. per acre to St. Augustine grass sod. Make application close to anticipated weed seed germination.

Post-Emergent Applications:

Apply Tenacity at four to eight fl. oz. per acre in at least 30 gallons of water per acre. Apply with a nonionic surfactant like Southern Ag Surfactant. A repeat application after two to three weeks may be required for adequate weed control.

Tenacity will begin working to kill weeds immediately, but you may not see a difference for two or three weeks. You may also see some plants turn white after an application of Tenacity. Some weeds may need a follow-up application. If you are spot-treating, mix 1/2 a teaspoon of Tenacity with 1 1/2 teaspoons of surfactant in one gallon of water.

Surfactants are recommended to use in combination with Tenacity to increase herbicide effectiveness by reducing surface tension of water so that herbicides can penetrate the soil and kill weeds more effectively.

Read the product label thoroughly before applying. Excessive use of this product can cause a temporary burn or loss of color in your yard. It may cause non-permanent whitening of the turfgrass foliage. These symptoms appear five to seven days after the application and may last for several weeks.

For more information, refer to the product label.

Product Label

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Based on 8 reviews Average Product Rating 5.0 stars
5 Star Rating - 8 Customer Reviews (8)
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  • Verified buyer
    5 star rating michael hofer M. H. michael h.

    Have not received it.

    Have not received Tenacity or my bend grass order?

  • Verified buyer
    5 star rating Boris Orlowski B. O. Boris O.

    No results yet but shipping was extra fast!!!

    Tenacity Herbicide - 8 Oz.

  • Verified buyer
    5 star rating Gerald Boyle G. B. Gerald B.

    Excellent service

    Products were delivered as promised

  • Verified buyer
    5 star rating Blade Donaldson B. D. Blade D.

    Ships right away.

    Got to my place almost a week before it was expected and was shipped across country.. Well packaged. I haven’t used it yet since it’s still winter here but have before and it’s a great product. Would recommend buying from here again

  • 5 star rating Scott Z. S. Z. Scott Z.

    Everything is working great!

    Everything is working great!

  • 5 star rating Annabel R. A. R. Annabel R.

    Tenacity I would recommended it

    Tenacity I would recommended it really does a great job.

  • Verified buyer
    5 star rating sean gibbons S. G. sean g.

    Not received

    Hi Seed World Unfortunately, shippment was stopped at Australian customs and returned to you. The reason because correct documentation was not provided. In order to clear this shipment, FedEx requires submission of the following documents/information: Manufacturer’s declaration with a detailed description of the goods is required. This must state the following: A) Origin of goods – (Animal / Plant / Microbial / 100% Synthetic) B) Composition and end use of goods C) Import permit maybe required. Please have the declaration on Company Letterhead, dated, signed (including printed name and job position) and with FedEx AWB# stated to: aucdndoc@fedex.com The AWB# must be clearly stated on all pages. At this stage probably best to request a refund? Thank you , Sean

  • Verified buyer
    5 star rating patricia mondor P. M. patricia m.

    Very Professional

    From order to delivery, including packaging, delivery timeframe and communications - I could not ask for more a professional service. Thank you!

Bob Fangmann

Will Tenacity harm Maple trees? We have young trees plante in May of last year. They are eighteen to twenty feet tall now.

   Answers (1)

Tenacity Herbicide is not labeled for trees so spraying around the trees could possibly harm them. We would recommend contacting the manufacturer directly for instructions on spraying around new trees.

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