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Tenacity Herbicide

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Tenacity Herbicide by Syngenta is designed as a pre-emergent and post-emergent herbicide for the selective contact and residual control of listed weeds in ornamental turfgrasses. Tenacity may cause temporary whitening of turfgrass foliage; in gerneral, symptoms appear five to seven days after application and may last for several weeks.

Target Pests

Tenacity Herbicide is used for the control of barnyardgrass bentgrass bluegrass buttercup carpetweed chickweed clover crabgrass curly dock dandelion florida betony florida pursley foxtail galinsoga goosegrass ground ivy healall henbit lambsquarters lawn burweed lovegrass yellow nutsedge pigweed purslane sheperd's purse smartweed speedwell sowthistle thistle wild carrot wild violet and many other listed weeds.

For Use In

Tenacity Herbicide is for use on turfgrass species listed on the above label in commercial and residential sites such as golf courses sod farms athletic fields parks residential and commercial properties cemeteries airports and lawns. Do not use on golf course putting greens maintain a 5 foot buffer from the greens.

Application

Rates of pre-emergent application with Tenacity Herbicide vary drastically depending on the species of turf grass from 4 to 8 ounces per acre per application in at least 30 gallons of water prior to weed seed germination. Do not exceed 4 ounces per acre for use on St. Augustinegrass.

For post-emergent application with Tenacity Herbicide use at a rate of 4 to 8 ounces per acre in at least 30 gallons of water per acre adding in a non-ionic surfactant; a repeat application at 2 to 3 weeks may be required for more adequate weed control.

For spot treatments using Tenacity Herbicide mix at a rate of 1 teaspoon to 1 teaspoon of a non-ionic surfactant in at least 2 gallons of water. Apply at 1 gallon per 1,000 square feet.

Coverage Area

If used at the maximum rate of application per acre to St. Augustinegrass each 8 ounce container will treat an estimated 2 acres.

Time to Kill

Tenacity Herbicide begins killing weeds withing minutes after application but can take up to several weeks to get complete control depending on the target weed.

Mix Rate

Mix 1/3 ounce of Tenacity herbicide in 1 gallon of water for spot treatments.

Active Ingredient

Mesotrione 40.0%

Tenacity Herbicide

Get Serious Weed Control With Tenacity Herbicide

Tenacity is a quality herbicide manufactured by Syngenta. Tenacity's active ingredient is mesotrione, which has perhaps the widest weed spectrum of any herbicide used in turfgrass. No longer will you have to see first and spray later. With Tenacity Herbicide, your turf is fully protected from day one.

 

Tenacity is a very valuable tool for lawn care. To begin with, it's an excellent product which can be applied at seed. Tenacity can control troublesome such as chickweed, henbit and crabgrass during the important phase of seed germination and establishment.


Another exciting benefit of this unique pre and post emergence herbicide is its ability to remove difficult weeds throughout the year. Tenacity is the only herbicide that selectively controls 46 broadleaf and grassy weeds including bentgrass, nimblewill and crabgrass species. Tenacity can provide excellent control of crabgrass in residential yards. This is very important because MSMA has recently been banned by the EPA for homeowner or residential use. Tenacity can be applied pre for crabgrass control or it can be applied post for crabgrass control at any stage. Best control is typically achieved with two applications on a three week interval. 

 

If you are wondering how much Tenacity per gallon it takes to treat your yard, please refer to the instructions on the label.

 

The white weeds that appear after a Tenacity application will let you know that your treatment is working. Some desirable turf may experience slight bleaching but white grass tips can be mowed off with subsequent mowings. 

 

Order Tenacity Herbicide today and get it shipped to you for free.

 

ADDING Tenacity TO YOUR CART? DONT FORGET THESE ESSENTIAL ADD ONS

Red Spray Pattern Indicator (Brandt Mark-It) - Keep track of your spraying and avoid overspraying with this spray.

 

As always, stay safe when spraying chemicals with the help of homeowner pesticide safety kit

Help the herbicide stick better to the weeds with surfactant such as Alligare 90 Wetting Agent

 

Product Q & A

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Browse 24 questions Browse 24 questions and 22 answers
How soon after applying tenacity can the lawn be mowed?
Hawkeye on Jun 22, 2017
BEST ANSWER: You will want to wait at least a week after application before you mow, the longer you can wait the better.
Does this kill quackgrass?
Brett C on Jun 14, 2018
BEST ANSWER: No, Tenacity is not labeled to control Quackgrass, you would want to use something like Outrider.

https://www.solutionsstores.com/quackgrass-control
when can we and our pets walk on treated grass?
A shopper on May 8, 2018
BEST ANSWER: You will want to keep pets out of the area that has been treated with Tenacity until it completely dries.
I have many weeds in my residential lawn including foxtail ,crabgrass and the helicopter weed which is the better product the drive xlr8 or the tenacity ?
dewayne t on May 7, 2018
Tenacity Herbicide
Tenacity Herbicide
Drive XLR8 Crabgrass Killer
Drive XLR8 Crabgrass Killer
BEST ANSWER: Can you tell me what type of lawn you have?
When mixing tenacity with water it doesn’t seem to mix well with the water look like oil and water should I shake it?
A shopper on May 6, 2018
BEST ANSWER: Yes, you will need to shake the mixture until it is complete mixed into the water solution.
I live in Las Cruces, NM. I have bermuda grass. Trying to kill crabgrass. Will Tenacity hurt bermuda grass?
A shopper on Apr 23, 2018
BEST ANSWER: No the tenacity will not harm the bermuda lawn.
I applied tenacity two weeks ago. Can I plant grass seed now?
Randy B on Apr 16, 2018
BEST ANSWER: For the Tenacity I would give it another weeks and then plant the seeds
I live in North Ala and have centipede in the front and hybrid bermuda in the rear. Can I use Tenacity to get rid of poa annua? If so what mixing rate should I use?
Guest on Apr 2, 2018
BEST ANSWER: Yes the Tenacity would be safe to apply on the Centipede and Bermuda. The mix for the Poa Annua is .15 oz per gallon of water and will cover 1,000 sq ft. A second application can be made if needed in 2 to 3 weeks.
Will this work for marsh parsley on St. Augustine grass?
john s on Apr 1, 2018
BEST ANSWER: Yes, Tenacity should kill any type of broadleaf weed in St. Augustine Grass.
For post emergence bentgrass controll, what is the mixing rate?
A shopper on Mar 20, 2018
BEST ANSWER: Are you trying to kill the Bentgrass?

Bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum and bermudagrass are sensitive to Tenacity
applications. Avoid spraying these turf types unless control and/or injury can be tolerated. Maintain a five foot
buffer between treated areas and bentgrass or Poa annua greens.
Will this kill yellow foxtail?
If no, what will?
Cal P on Sep 5, 2017
BEST ANSWER: Yes, Tenacity is labeled to control Foxtail. I would recommend using a pre-emergent in the spring and fall months as an added layer to the perfect weed free lawn. https://www.solutionsstores.com/lawn-and-turf/grassy-weeds-control/foxtail-control
My climate (Eastern Washington) still has days over 90F. Is it appropriate to apply Tenacity to my lawn for Bentgrass control under these hot conditions?
Richard C on Aug 21, 2017
BEST ANSWER: Yes, it will be fine to apply to your lawn, just insure that the grass you apply Tenacity to is not stressed or diseased.
I have crabgrass nutgrass foxtail in Bluegrass lawn can I use tenacity?
Waylon on Jul 17, 2017
BEST ANSWER: Yes this will be safe to apply to the Kentucky Bluegrass and will eliminate the crabgrass, foxtail, nutsedge, and many other weeds.
What is the lowest temperature one can spray tenacity and still get it to kill? It's 50 degrees right now where I'm at.
CK on May 24, 2017
BEST ANSWER: You want the weeds and plants to be actively growing, transpiring. Typically, things are greening up, starting to grow, what state are you located in?

Tenacity� is a systemic preemergence and postemergence herbicide for the selective contact and residual control
of weeds in turfgrasses. When applied preemergence, 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 postemergence,
susceptible weeds absorb Tenacity 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 postemergence weed control. A non-ionic surfactant should be
added in postemergence applications.
Does tenacity need to be watered in?
Steve on May 10, 2017
BEST ANSWER: No it will not be necessary to water in the chemical after applying it. The product is already mixed with water for the application.
Is this safe for St. Augustine? I have goose grass and global sedge.
CG on May 4, 2017
BEST ANSWER: Yes this product can be used on St. Augustine lawn the product can be applied at a rate of 4fl oz / Acre.
Can this be used in spring before over seeding tall fescue?
HC on Dec 30, 2016
BEST ANSWER: New Seedings/New Lawn Establishment � 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
How long after treatment can children begin using the turf again?
David on Nov 24, 2016
BEST ANSWER: You want it to completely dry, so I would recommend about 4 hours to keep pets and children out of the area.
How long after sewing tall fescue can Tenacity by applied?
HC on Sep 28, 2016
BEST ANSWER: Apply Tenacity at 5-8 fluid ounces 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. Wait until the grass seeding has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence application.
How long after using this chemical can I seed using a tall fescue?
Laura on Aug 21, 2016
BEST ANSWER: You cannot reseed with Fescue after Tenacity is applied, because it is a pre-emergent. Would need to wait an entire season.

Tenacity� is a systemic preemergence and postemergence herbicide for the selective contact and residual control
of weeds in turfgrasses. When applied preemergence, 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 postemergence,
susceptible weeds absorb Tenacity 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 postemergence weed control. A non-ionic surfactant should be
added in postemergence applications.
at what temperature can Tenacity be applied?
Paul on Aug 12, 2016
BEST ANSWER: Tenacity should not be applied when the temperature is over 90 Degrees and there is a chance of rainfall.
How much to kill 200 sf
Deb on Aug 10, 2016
BEST ANSWER: http://archive.lib.msu.edu/tic/holen/article/2012may14.pdf great piece of information on Tenacity application.
0.2 ounces per gallon per 1,000 square feet of application.

http://www.epestsolutions.com/psd/tenacity%20label.pdf copy of the label
Can I mix Patch Pro and Tenacity in the same application?
A shopper on Jun 16, 2018
Tenacity Herbicide
Tenacity Herbicide
Patch Pro Fungicide
Patch Pro Fungicide
In the Northwest when and how often should I use Tenacity to rid poa annuan in my yard? I have hand pulled out barrels but of course I need to get rid of the seeds and prevent more plants.
Sandy A on Apr 21, 2018

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Controls windmill grass
Purchased for control of windmill grass in a buffalo grass lawn. I am using Tenacity and Dimension for pre-emergent control. Each product has specific weeds not controlled by the other.With a lot infested with windmill grass adjacent to my yard I was losing the battle. Cursing the day that DSMA and MSMA were banned, as they were good controls for windmill grass. My only choices were a hoe or glyphosate, both destructive to any lawn.Tenacity was made available for homeowner use in early 2012. Since then, my lawn is repairing from the use of glyphosate, and the windmill grass is being held in check. Tenacity does a good job on it. But it does not perform as well with broadleaf weeds as hoped. Post-emergence control of crabgrass is excellent. The part amazing is watching the plants turn white from a lack of chlorophyll. My only complaints about Tenacity are the cost and the limited availability, the latter is the result of local retailers refusing to carry the product. The cost is about the same as Dimension, so I can't complain too much.
June 3, 2013

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