Price/Ea.
$66.64
Buy 3 or more: $64.05 each
Have a Question? Ask Our Pros!
Email Our Pros
We're here to help
Offline. Leave Us a Message
You May Also Need
Product Highlights
- Controls over 46 broadleaf weeds & grasses
- Selective pre- and post-emergent weed control
- Use when seeding cool-season lawns to prevent weeds from germinating
-
Product Overview
Tenacity Herbicide is a systemic pre-emergent and post-emergent herbicide for the selective contact and residual control of weeds in turfgrasses. Tenacity can be used for weed control prior to or during seeding of certain turfgrasses during renovations. When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil. Dry conditions following application may reduce the pre-emergence activity. If rainfall (0.15 inches) has not occurred within 10 days after a pre-emergence application, activate with 0.15 inches of irrigation. When used as a post-emergent, Tenacity weed killer is absorbed by susceptible weeds through foliar contact and soil absorption. 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 post-emergence weed control. A non-ionic surfactant should be added in post-emergence applications.
We also offer the Tenacity Herbicide Kit with Surfactant and Spray Indicator Dye which includes one 8 ounce bottle of Tenacity Herbicide, one 32 ounce bottle of Turf Mark Blue Spray Indicator Dye, and one 8 ounce bottle of Hi-Yield Spreader Sticker Non-Ionic Surfactant.
PLEASE NOTE:- Tenacity is NOT for use on Bermudagrass when actively growing or St Augustine home lawns.
- Tenacity does NOT provide post-emergent control of Poa Annua. It will only provide suppression of Poa Annua when used as a pre-emergent.
- When treating for clover, or suppression of bermudagrass, it is recommended to tank mix Tenacity Herbicide with Turflon Ester for more improved control. Please see Supplemental Label 2(ee) for complete instructions. This 2(ee) Recommendation applies to the following turf species only: Tall fescue, Kentucky Bluegrass, and Perennial Ryegrass.
Syngenta has recently updated its Tenacity packaging. You may get either the new packaging or the old packaging until all of the old packaging style has been depleted. There is no change to the product itself, only the exterior packaging.
-
Details
Active Ingredient Mesotrione 40% Target pests Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others
* See label for complete listFor use in Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass (grown for sod only) Application 4 - 8 oz. per 30 gallons of water per acre
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructionsFormulation Professional Product
Group 27 HerbicideNOT FOR SALE TO AK, PR Shelf Life 3-5 years from date of manufacture when properly stored. Keep out of direct sunlight and extreme temperatures Shipping Weight 0.81 lbs Manufacturer Syngenta (Mfg. Number: 46256) EPA Registration 100-1267 What makes Tenacity different than other currently used turf herbicides?
Tenacity is a selective, systemic herbicide that features a new mode of action for pre- and post-emergence grass and broadleaf weed control in several cool- and warm-season turf species—like keeping bentgrass out of your rough. Tenacity can also be applied on established or newly seeded turf.
How was Tenacity herbicide discovered?
A Syngenta scientist in California noticed that there were fewer weeds growing under his bottlebrush (Callistemon citrinus) plant, far fewer than can be explained by shading alone. He concluded that the plant must be producing allelochemicals to suppress weed competition. Syngenta synthesized mesotrione based on the allelochemicals produced by the bottlebrush plant.
What is the mode of action of Tenacity herbicide?
Tenacity inhibits a plant enzyme called HPPD that is essential to photosynthesis and prevents formation of carotenoids in susceptible plant species. Without carotenoids, light energy and by-products of photosynthesis will destroy chlorophyll and cell membranes. This results in bleaching of leaves followed by necrosis and death of the plant.
How quickly does Tenacity work?
Once absorbed, Tenacity quickly translocates throughout the plant. Weed growth is suppressed soon after application, as photosynthesis is disrupted. Death of the plant usually occurs within two to three weeks.
What are some of the unique benefits of Tenacity herbicide?
Tenacity has pre- and post-emergence activity on 46 dicot and monocot weed species. It can selectively control perennial monocots such as bentgrass and nimblewill and annuals such as crabgrass and goosegrass in many turfgrass species. Tenacity can be applied at the seeding to prevent weed germination and allow the turfgrass species to establish without weed competition.
Can Tenacity be used to get bentgrass out of roughs and fairways?
Yes. Tenacity selectively controls bentgrass out of Kentucky bluegrass, perennial ryegrass, and tall fescue turf.
What does it mean that Tenacity was granted reduced-risk status by the EPA? Why did Tenacity earn this status?
Reduced-risk is an EPA designated registration status that accelerates the process for registration of certain new plant protection products. Tenacity received reduced-risk status by the EPA based on its unique mode of action, low use rates, and favorable toxicity and human health profiles, as compared to other herbicides currently on the market.
On which grasses has Tenacity been tested for use at or prior to seeding?
Tenacity is safe for use at or prior to seeding on Kentucky bluegrass, tall fescue, perennial ryegrass, and centipedegrass. Application at seeding can be made to fine fescue only if it is less than 20% of a seed mixture.
Are there any grasses on which you can't use Tenacity?
Tenacity is not recommended for use on zoysiagrass, hybrid or common bermudagrass, seashore paspalum, or kikuyugrass.
Can Tenacity be tank mixed with other herbicides?
Tenacity can be tank mixed with Barricade, dicamba, carfentrazone, triclorpyr, atrazine, simazine, s-metolachlor, bentazon, and several three-way phenoxy herbicides. Combinations can help turf managers broaden the weed control spectrum or improve the level of weed control over single-product applications.
How rainfast is Tenacity?
Tenacity is rainfast within several hours under normal rainfall conditions.
What other brands currently on the market offer a product similar to Tenacity?
There are currently no other herbicides like Tenacity for golf courses and sod farms registered for use or sale in the U.S. Tenacity will compete with multiple products from different classes of chemistry.
-
Product Documents
-
Related Videos
-
618 Customer Reviews
Top Reviews
Tenacity Herbicide
By Frank on 05/07/2012
Verified Purchase
I had a lot of weed grasses in my yard and they were invasive and spreading over the whole yard. Tenacity targets weed grasses and kills them while leaving the rest of the yard in tact and that is exa…
Read Full Review »A Miracle Herbicide!
By Margaret on 08/14/2012
Verified Purchase
I had a lawn that was completely taken over by bentgrass. I used round up on the lawn and put in an entire new lawn. All was well for a year or two. Then the the bentgrass came back in a few isolated …
Read Full Review »Death of Nimblewill grass
By David on 10/02/2015
It took a while, but the grass and other weeds are all white/dying. I used three teaspoons of "Dawn Ultra" & one teaspoon of Tenacity to two gallons of water, per a study by Ohio State University.
-
676 Questions & Answers
Search results for "aerate"
QShould I aerate prior to applying Tenacity?
I am planning on aerating my lawn.
QCan aerate after using Tenacity Herbicide?
I'm trying to build a schedule but I have a hard time planning it out. I plan to core aerate my yard now and then after winter and again in the fall and overseed. Does it matter when I aerate after applying this stuff or do I need to wait until all the weed grasses are gone? I assume that the weeds being covered by this will still die even if they end up buried under the cores.
ASInce you can use Tenacity Herbicide either prior to or during seeding of certain turfgrasses you could either aerate before or after using the product and it would still work. There is nothing on the product label stating that there is a certain time to do aerating.Â
Was this answer helpful to you? YesNo
10 of 11 people found this answer helpful
QWhen can the lawn be aerated and overseeded after applying Tenacity?AWhen spot treating with Tenacity Herbicide, you can aerate any time after that without any issues. If the plan is to make a broadcast application, we recommend to aerate before the treatment is applied.
Was this answer helpful to you? YesNo
3 of 3 people found this answer helpful
QShould I use Tenacity before or after aerating and overseeding?
I'm starting to think about using my tenacity in September however I want to aerate and overseed my yard either before or after. What are your recommendations as to a timeline before after
AIf you are using Tenacity Herbicide as a pre-emergent herbicide, then you should aerate first and then apply Tenacity at the same time as seeding or just before. Do not wait until the new grass has started to come up before using Tenacity. If using Tenacity as a post-emergent, then you can apply anytime before seeding, but keep in mind that it may take a couple weeks to kill the target plants, so you would want to wait for those plants to die before aerating and reseeding.
Was this answer helpful to you? YesNo
84 of 92 people found this answer helpful
QShould dead/dying crabgrass be pulled up before Sept. overseeding after using Tenacity Herbicide?
Crabgrass has taken over front lawn. Applied Tenacity in early August and crabgrass white/brown and dying 2 1/2 - 3 weeks later. Now I want to do a fall overseed. Do the massive areas of dead crabgrass (and some nutsedge) all have to be pulled up before roughing up, spreading top soil and reseeding? Need to reseed soon, but the crabgrass won't have withered and died in time. (in Mid-state NY).
AWhen using Tenacity Herbicide you should remove the thatch layer before reseeding, and it is best to aerate prior to the application as well. You want to be sure that the new seed has the best chance to come in contact with the soil.Â
Was this answer helpful to you? YesNo
28 of 36 people found this answer helpful
QAfter you apply Tenacity and the weeds turn from white to brown, do you dig up the dead weeds?AYou do not have to remove dead plant matter after using Tenacity Herbicide, however if you plan to overseed, then it is a good idea to rake out dead plants since you may need to dethatch or aerate before putting down your new seed.
Was this answer helpful to you? YesNo
20 of 21 people found this answer helpful
QAfter a hot summer and appling tenacity late summer how and when do I get rid of all the dead white matter ?
Should I de-thatch the lawn before over seeding to clear out the dead weeds and white remnants ?
AYou do not have to remove dead plant matter after using Tenacity Herbicide. However if you plan to overseed, then it is a good idea to rake out dead plants since you may need to dethatch or aerate before putting down your new seed.
Was this answer helpful to you? YesNo
1 of 1 people found this answer helpful
QCan I combine Q4 and tenacity as a post emergent?
If so, what's the rate for application
ATenacity Herbicide should not be tank mixed with Q4. Q4 does not require the addition of a surfactant for post emergent applications while Tenacity does. You also only spot treat with Tenacity for post emergent control but can broadcast with the Q4.
QShould I use a surfactant when applying Tenacity Herbicide to a newly seeded lawn?
Trying to restore my lawn and aerate/seed this past Saturday 9/3/2016. Waiting for my order of Tenacity and Surfactant to arrive sometimes this week. Should I use both products and apply to the new lawn even though it's a week after seeding? Also should I use surfactant with it for pre-emergence or is that only for post? Thanks in advance!
AIt is safe to apply Tenacity Herbicide at or near seeding for most types of turfgrass for pre-emergent control. You should avoid spraying Tenacity on newly germinated turfgrass plants. Please refer to the product label for complete application instructions. You would only need to use a surfactant when applying Tenacity for post-emergent weed control.
Was this answer helpful to you? YesNo
6 of 9 people found this answer helpful
QWill Tenacity Herbicide kill weeds while my grass is dormant without injuring my lawn.ATenacity Herbicide can be applied to dormant bermudagrass only without injuring the bermudagrass. However, a better product would be Negate 37WG.Â
Negate 37WGÂ can be used on dormant or growing turf for listed weeds as directed on the product label.
Items 1 - 10 (of 65 Total)
1 of 7
