Tenacity Weed Killer Review

By PropertyClub Team
Apr 16th 2023
Tenacity Herbicide is a commercial herbicide agent that has been around since 2008. Since then, it’s become one of the staple herbicide choices for lawn caregivers everywhere. Let’s break down Tenacity Herbicide in detail and see if it’s the right choice for your lawn.

hash-markTable of Contents

How Good Is Tenacity Weed Killer?
How to Use Tenacity Weed Killer
When to Reapply Tenacity
Tenacity Herbicide Benefits
What Weeds Does Tenacity Kill?
Where to Buy Tenacity Herbicide
Tenacity Weed Killer Bottom Line

hash-markHow Good Is Tenacity Weed Killer?

As advertised, Tenacity Herbicide is an incredibly effective weed killer and provides both pre-and post-emergent control for over 46 broadleaf grass and weed species. 

Tenacity works primarily from the active ingredient mesotrione. Mesotrione is derived from a naturally occurring compound produced by Callistemon Citrinus, otherwise known as the bottlebrush plant.

In a nutshell, the mesotrione works by inhibiting photosynthesis in certain plant species. This prevents plants from creating enough food, so they are unable to grow or maintain their biomass. This is distinct from other types of herbicides that may only kill certain sections of plants they come into direct contact with.

By contrast, Tenacity is a systemic herbicide. Upon being absorbed by the target plant, the herbicide moves throughout the plant entirely. This kills the target plant completely, making it extremely effective as a long-term herbicide solution.

For instance, this means that any target plants won’t have the roots survive to grow again next season. This permanent eradication is effective, but it can also be a little dangerous if misapplied.

hash-markHow to Use Tenacity Weed Killer

Using Tenacity weed killer is pretty and easy, which is another reason why it’s so popular with homeowners with big lawns they need to take care of.

  1. To start, you apply Tenacity by mixing it with 30 gallons of water per acre at concentrations of 2 to 4 fluid ounces per acre
  2. You only increase this concentration to 5 to 8 fluid ounces per acre if applying Tenacity to new seedings
  3. Reapply your Tenacity every 2 to 3 weeks based on weed growth progress

You may also consider using Tenacity before you see weeds crop up. Since Tenacity can be used as a pre-emergent herbicide agent, you can potentially prevent weeds from impacting your lawn if you regularly use this herbicide every month or so.

hash-markWhen to Reapply Tenacity

It's important to reapply Tenacity weed killer every two to three weeks. You can reapply Tenacity multiple times if you don't get the desired results right away. However, it's important to remember that you shouldn't apply more than 16 ounces of tenacity per acre per year.

hash-markTenacity Herbicide Benefits

  1. Tenacity is Selective
  2. Fast Results
  3. East to Mix With Other Herbicides

1. Tenacity is Selective

One of the biggest benefits of using Tenacity as a weed killer is that it's selective. That means it won’t accidentally destroy your lawn, even if you apply it throughout your grass. So you can easily use Tenacity on both newly seeded turf and already established turf depending on your preferences.

2. Fast Results

Furthermore, Tenacity produces results relatively quickly compared to other herbicides. As soon as your target plants absorb Tenacity, it’ll quickly travel throughout and suppress their growth. In general, it only takes between two and three weeks for weeds to die after applying Tenacity.

3. Easy to Mix With Other Herbicides

Another benefit of using Tenacity weed killer is that you can mix it with other herbicides in tanks. For instance, you can easily combine Tenacity with:

  • Atrazine
  • Simazine
  • Carfentrazone
  • Dicamba
  • And more

By mixing all of these into a single tank, it’s easy to quickly and efficiently spray even large sections of turf with a wide variety of weed killers and weed controllers. This, in turn, allows you to complete your lawn care chores that much more quickly. You can protect your lawn from multiple weed species at once by mixing herbicides.

hash-markWhat Weeds Does Tenacity Kill?

Tenacity is extremely effective at killing crabgrass and other weeds. Here is a list of the weeds Tenacity can kill:

  • crabgrass
  • dandelion
  • yellow foxtail
  • yellow nutsedge
  • bentgrass
  • ground ivy
  • henbit
  • and more

Tenacity Herbicide is a “selective” herbicide agent. This means that it’s incredibly effective if you only want to kill a few certain weeds or plant species that may be mixed in with your regular lawn grass. It does not kill all types of grass that it comes into contact with, so it’s relatively safe, provided you use it correctly.

As a pre-and post-emergent herbicide, Tenacity allows you to destroy weeds before they even emerge from your lawn’s soil and after they have already appeared. Thus, it’s good both as a preventative measure to stop weeds from spreading in the first place and is a good solution if you find weeds already spreading throughout your yard.

hash-markWhere to Buy Tenacity Herbicide

Tenacity Herbicide is still manufactured by Syngenta, the same company that created it in 2008. This company is headquartered in Switzerland, but you can now purchase this herbicide from various online vendors such as Amazon.

However, you can also purchase Tenacity straight from Syngenta’s website. You can occasionally benefit from certain discounts on bulk orders or holiday bonuses if you visit that site instead of Amazon.

All in all, Tenacity Herbicide is an excellent choice for a weed killer for the majority of lawn owners, especially if you have issues with one of the 46 different weeds that it’s rated to take care of.

hash-markTenacity Weed Killer Bottom Line

Tenacity herbicide is one of the most effective weed killers on the market. You can use it to kill a variety of lawn weeds, including crabgrass, dandelion, and ground ivy. It's incredibly easy to use tenacity weed killer, and you won't risk damaging your grass, as it's selective, meaning it only targets specific weeds.