---
product_id: 62198296
title: "Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide"
brand: "syngenta"
price: "479 zł"
currency: PLN
in_stock: false
reviews_count: 8
url: https://www.desertcart.pl/products/62198296-syngenta-tenacity-herbicide-pre-emergent-and-post-emergent-weed-control
store_origin: PL
region: Poland
---

# 5-8 year shelf life, long-lasting potency Systemic weed control with visible whitening Dual pre- & post-emergent action Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide

**Brand:** syngenta
**Price:** 479 zł
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Own the lawn that turns heads—weed-free, worry-free!

## Quick Answers

- **What is this?** Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide by syngenta
- **How much does it cost?** 479 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/62198296-syngenta-tenacity-herbicide-pre-emergent-and-post-emergent-weed-control)

## Best For

- syngenta enthusiasts

## Why This Product

- Trusted syngenta brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Term Lawn Loyalty:** Shelf life up to 8 years ensures you’re always ready for seasonal weed battles.
- • **See It Work, Trust It More:** Unique whitening effect signals active chlorophyll disruption—watch weeds vanish.
- • **Weed Control, Twice as Nice:** Prevents and eliminates 46 broadleaf & grassy weeds for a flawless lawn.
- • **Pro-Grade Results, DIY Friendly:** Backed by Syngenta’s expertise, easy for homeowners to apply with confidence and precision.
- • **Safe for Your Turf, Tough on Weeds:** Selective herbicide protects your grass while targeting invasive species like crabgrass and dandelions.

## Overview

Syngenta Tenacity Herbicide is an 8-oz liquid concentrate featuring mesotrione, designed for both pre-emergent and post-emergent control of 46 common lawn weeds. It works systemically to disrupt weed photosynthesis, visibly whitening unwanted plants before they die, while being safe for turfgrasses. With a shelf life of up to 8 years and trusted Syngenta formulation, Tenacity delivers professional-grade weed control for homeowners seeking a vibrant, healthy lawn.

## Description

Tenacity herbicide 8oz. from Syngenta was designed for use at seeding to prevent weeds from germinating, giving new grass the chance to flourish without competition from invasive weeds. But Tenacity doesn’t stop there. Tenacity also offers pre-emergent and post-emergent control of 46 broadleaf and grassy weeds including dandelions, crabgrass, clover and other common nuisance weeds in lawns. Tenacity also provides effective control of creeping bentgrass to help keep your lawn healthy and vibrant. Tenacity lawn weed killer concentrate prevents target weeds from producing chlorophyll and photosynthesis, turning these undesirable weeds and grasses white prior to necrosis. White means its working, so you can visually eliminate unwanted weeds without worrying about damaging your lawn. Tenacity is user friendly for beginners and experienced homeowners alike, helping to ensure that anyone can achieve a beautiful lawn with minimal effort. A repeat application may be required after two to three weeks. As a trusted leader in herbicides and lawn care products, Tenacity weed control is backed by years of research and expertise. You can rely on its quality and efficacy to deliver professional-grade results for your lawn. Trust Tenacity to meet your high standards of quality and turf safety. © 2024 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Tenacity® and the Syngenta logo are trademarks of a Syngenta Group Company.

Review: Seems to work, Update 9/28/19 - Update...totally works. I'm about 7 weeks I think from my first application. OH BOY, I thought I had made a mistake!! My beautiful lawn turned splotchy white. I thought I had destroyed my lawn, but no...the lawn came back nicely with very little lime green still present, where it had huge clumps previously. I am now a believer in Tenacity. As a further benefit. In my back yard I have a small section of grass, basically our dog's bathroom. I don't do much to that at all but I applied Tenacity there... Got rid of the Poa Triv and Annua...and the Nutsedge!!! Looks GREAT!! I take pride in my lawn. 3 years ago, that little bit of lime green grass showed up. 3 years later, it was all throughout the lawn. I had both Poa Trivalis and Poa Annua. I've spread activity with Tenacity over 3 weeks. #1 was specifically targeted at obvious big splotches. #2 I did a generic spray of the entire front lawn. Took about 2 weeks and the white undesireable grasses are very obvious. 3 weeks later I repeated both actions (spot spray) and total lawn coverage. It's August 31, I'm going to wait a few weeks and then core aerate and over seed. So far, it seems to work. I'm sure it will be an ongoing effort to keep the Poa(s) at bay. Crab grass, clover and dandelions, not an issue this year. I've got a bit of NutsEdge. Need to read a bit and see if Tenacity takes that down too. Looking forward to the darkest of greens next year.
Review: works great, but not as fast as you would think. - I needed a herbicide that was very strong, but safe. I have been looking for years to find this item. and here it is. i had some weeds and clover in my lawn that I absolutely could not kill. Our lawn is very large on our property with over 2 acres of grass. with other herbicides it cost me a fortune to use, and they never fully killed the weeds. This time I used Tanacity as specified by adding a surfactant (makes it stick to the weeds) and a dye that allows you to see where the Tanacity is being put on the lawn (very important, so it does not kill you lawn). I expected to see the weeds die in 3 or 4 days.. it took 10 days.. but when they started to die.. everything turned pure white.. just like it says.. and they have not returned. on the very large patches of clover, it took two doses to kill them all, but it did work. This stuff is expensive, but if you have a large amount of property like we do, then the per dose price is not too bad and the good news is, it works. buy it and try it.

## Features

- Eliminates weeds at seedlings so new grass can flourish.
- Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.
- When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.
- Target pests: Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others
- Date printed on bottle is Manufacture Date, not expiration. Shelf Life: 5-8 years from date of manufacture when properly stored. Keep out of direct sunlight and extreme temperatures

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0060N8TG8 |
| Active Ingredients | Herbicide, mesotrione |
| Best Sellers Rank | #225,027 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #580 in Weed Killers |
| Brand | Syngenta |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,236) |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 11.5 ounces |
| Item model number | A12738A |
| Liquid Volume | 8 Fluid Ounces |
| Manufacturer | Syngenta |
| Product Dimensions | 2.05 x 2.7 x 4.7 inches |
| UPC | 810096032430 |
| Unit Count | 8.0 Fluid Ounces |

## Product Details

- **Active Ingredients:** Herbicide, mesotrione
- **Brand:** Syngenta
- **Item Form:** Liquid
- **Item Weight:** 11.5 Ounces
- **Liquid Volume:** 8 Fluid Ounces

## Images

![Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide - Image 1](https://m.media-amazon.com/images/I/31NeN9ByncL.jpg)
![Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide - Image 2](https://m.media-amazon.com/images/I/51+Iuiuz71L.jpg)
![Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide - Image 3](https://m.media-amazon.com/images/I/519tpM+VELL.jpg)
![Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide - Image 4](https://m.media-amazon.com/images/I/51JmRjtDO5L.jpg)
![Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide - Image 5](https://m.media-amazon.com/images/I/51MEg1fLUyL.jpg)

## Questions & Answers

**Q: Does this kill creeping charlie?**
A: I can't say myself but found this on the internet.
https://www.domyown.com/does-tenacity-control-creeping-charlie-qa-12396.html
Answer: Yes, Tenacity is labled to control Ground Ivy "Creeping Charlie" as post emergent control. We highly recommend using a temporary turf colorant like Turf Mark Blue so that you can see where you spray with the Tenacity to avoid overlapping. Tenacity is a great product, but also a very strong product so too much overlapping or mixing the product too strong can cause temporary damage and ...

**Q: will this kill Poa annua in fescue grass with out killing the grass?**
A: Don't know what Poa anna is but it did kill large amounts of bent grass after three applications as recommended. Did apply seed and soil/peat moss following last application to replace dead bent grass. LOOKS FABULOUS this spring. By the way, the Tenacity treatment was applied last fall.

**Q: How long do I have to wait for over seeding after applied tenacity herbicides?**
A: i was a little surprised how slowly the Tenacity worked.  I was expecting it to work in 2 to 3 weeks.  it really took well over a month.  in addition, the grass was supposed to grow back, but did not really see that happen.  
They say you can replace see after about 1 month.  and I think that is more about cleaning up the dead weeds to put a new base down.  
Dont forget to get a Surfactant  (Southern Ag Surfactant for Herbicides Non-Ionic)  and i also used a dye, which is highly recommended. (Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator)  this is the only way you can tell where you have sprayed.  good luck.

**Q: Can you use it on bermuda grass?**
A: I do use on Bermuda grass.  It recommends spraying when the grass is dormant.  I've used this for almost two years now and try to spray the whole lawn twice a year as a post and pre-emergent.  Then spot treat.   It can turn the Bermuda grass white if you get it on to strong but it recovers.   Crabgrass was infesting my lawn so no big loss if the Bermuda turned white for a while.   My lawn has never looked better, but I've had to be diligent.  Don't apply if the temp is 90 or above.  Doesn't seem to work as well in dry weather.   Instructions say you need to irrigate .15" for pre emergence to work so the seeds bind with the chemical.  Heavy clumps of crabgrass will need multiple treatments otherwise, seeds keep coming up.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seems to work, Update 9/28/19
*by B***E on August 31, 2019*

Update...totally works. I'm about 7 weeks I think from my first application. OH BOY, I thought I had made a mistake!! My beautiful lawn turned splotchy white. I thought I had destroyed my lawn, but no...the lawn came back nicely with very little lime green still present, where it had huge clumps previously. I am now a believer in Tenacity. As a further benefit. In my back yard I have a small section of grass, basically our dog's bathroom. I don't do much to that at all but I applied Tenacity there... Got rid of the Poa Triv and Annua...and the Nutsedge!!! Looks GREAT!! I take pride in my lawn. 3 years ago, that little bit of lime green grass showed up. 3 years later, it was all throughout the lawn. I had both Poa Trivalis and Poa Annua. I've spread activity with Tenacity over 3 weeks. #1 was specifically targeted at obvious big splotches. #2 I did a generic spray of the entire front lawn. Took about 2 weeks and the white undesireable grasses are very obvious. 3 weeks later I repeated both actions (spot spray) and total lawn coverage. It's August 31, I'm going to wait a few weeks and then core aerate and over seed. So far, it seems to work. I'm sure it will be an ongoing effort to keep the Poa(s) at bay. Crab grass, clover and dandelions, not an issue this year. I've got a bit of NutsEdge. Need to read a bit and see if Tenacity takes that down too. Looking forward to the darkest of greens next year.

### ⭐⭐⭐⭐⭐ works great, but not as fast as you would think.
*by L***T on September 16, 2019*

I needed a herbicide that was very strong, but safe. I have been looking for years to find this item. and here it is. i had some weeds and clover in my lawn that I absolutely could not kill. Our lawn is very large on our property with over 2 acres of grass. with other herbicides it cost me a fortune to use, and they never fully killed the weeds. This time I used Tanacity as specified by adding a surfactant (makes it stick to the weeds) and a dye that allows you to see where the Tanacity is being put on the lawn (very important, so it does not kill you lawn). I expected to see the weeds die in 3 or 4 days.. it took 10 days.. but when they started to die.. everything turned pure white.. just like it says.. and they have not returned. on the very large patches of clover, it took two doses to kill them all, but it did work. This stuff is expensive, but if you have a large amount of property like we do, then the per dose price is not too bad and the good news is, it works. buy it and try it.

### ⭐⭐⭐⭐ Working better than my other choices, but still not as I had hoped or expected.
*by A***M on September 4, 2025*

With all of the reviews of this product, I was hoping for a better result. My grass bleached out near the use spots and stayed that way for weeks, not just days. I am also going to have to go over about half of my spots again as the weeds only laughed at my first application. Its working better than my "big-box" store brands, just not as well as I had expected.

## Frequently Bought Together

- Syngenta Tenacity Herbicide - Pre-Emergent and Post-Emergent Weed Control, 8-oz. Liquid Weed Killer for Lawns and Turf Grasses, Active Ingredient Mesotrione Herbicide
- Southern Ag Surfactant for Herbicides Non-Ionic, 16oz, 1 Pint
- Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator 8 Ounces Perfect Weed Dye, Herbicide Fertilizer Marking Turf Mark and Marker

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-01*