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Tenacity Herbicide Overview

By DoMyOwn staff

Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.

 Tenacity Herbicide Overview Video Play

Video Transcript

I think my back yard here has started to feel the neglect and rebel against my taking care of the lawn at DMOHQ, because now it is just full of weeds. Check it out!

And because I'm looking at doing an overseeding back here with in the first two weeks of September, I need to think long and hard about an herbicide that's not only going to give me post emergent control now, but give me a pre emergent barrier right before I seed when fall rolls in. So what herbicide is good to do that?

Let's talk about Tenacity.

So what's up with Tenacity? What makes this so unique and different from the other herbicides that are out there?

So first of all, what's really cool about it is it's a selective systemic herbicide that acts as both a pre and post emergent for many broadleaf weeds for both cool and warm season grasses. And another really cool thing about it is it can be applied on established or newly seeded turf.

Grass types that you can apply Tenacity in prior to seeding are going to include Kentucky Bluegrass, Perinnal Ryegrass, Tall Fescues and Centipede grass. And a little side note, application at seeding at fine fescues can be made if it's less than 20% of the seed mixture.

Another common question we get on this are what grass types can you not use it in? So we don't recommend that you use it in common and Hybrid Bermuda Grasses, Zoysia Grass,  Sea Shore Paspaylum...Paspalum, paspaulum, that one! Or Kiku, kikua, ki, kikugrass, grass, kikugrass? I, I don't know how to say that one either.

When is Tenacity rainfast? It's going to be rainfast within several hours of the application under normal rainfall conditions. So if you've just got a monsoon rolling through, I, I wouldn't recommend it.

Another popular question we get is can you tank mix it with other herbicides? And the answer is yes!

Ok, alright, for this section I couldn't memorize all of this so I had to turn to the trusty notebook write them all down so I didn't forget them. So, you can tank mix it with barricade, dicamba, carfentrazone, triclopier, atrazine, cymazine, cyn, cym, cymazine? Why are these so hard to pronounce? Esmedachlor..bentazone and several three way herbicides, so, this is, this is why I wasn't a chemist.

And the age old question that comes with a lot of our herbicides is do you have to water Tenacity in? The simplest answer, yes and no. Let me explain.

Remember, Tenacity is both a selective pre emergent and post emergent for a lot of broadleaf weeds. When you apply it as a pre emergent, weeds absorb Tenacity through the soil as they begin to emerge. Now if you have dry conditions during or after the application that might reduce the pre emergent activity. Now if rainfall just hasn't occured within about ten days of the pre emergent application of Tenacity, you're going to have to activate it in the soil with about a quarter inch of irrigation.

Now if you're applying Tenacity as a Post Emergent, systeable weeds are not only going to absorb it through foiliar contact but through the soil as well.

So conclusion, water it in if you're using Tenacity as a pre emergent but not if you're using it as a post emergent.

Alright so what is going to be the mix rate for mine fescue in the back? Per the label it says I need to go one teaspoon for every two gallons of water and three teaspoons of surfactant.

So that means for my four gallon back pack sprayer back here, I'm going to use two teaspoons of Tenacity with about six teaspoons of surfactant. So, let's get to it!

Also a quick note, one thing I really like about Tenacity, when you buy it they send you this little syringe that marks off the measurements for you. So one teaspoon right there for every two gallons of water. So, that's pretty cool.

Don't forget about  your surfactant and please wear your PPE.

Go time!


Per the label I've got to wait two to three weeks before I can make another application which I would like to do so that I can just really knock the weeds out of here and get a protective barrier down before I overseed.

So there's Tenacity Herbicide! What did I leave out? Let me know, sound off in the comments below, you can email those questions that I may have not answered over to the customer service staff, or you can pick up the phone, give them a call. The email address and phone number will be in the description box below.

Like I always do, I'll leave a link to the product in the description box below, you can click that "i" icon at the top of the screen, that will take you over to our website, Do My Own dot com, so you can look at that label a little bit more in depth and learn about all the restrictions or any other kind of information that I may have left out.

If you're not already, click this button right here to subscribe to the channel, click this link right here to watch the most recent lawn product overview video that we've done and if you want to see the most recent video in the lawn care series, click that link right there.

And as always, thanks for watching!