Tenacity Weed Killer Guide

By PropertyClub Team
Jul 20th 2022
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-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-markTenacity Herbicide Benefits

Tenacity provides several advantages to homeowners and gardeners who want an effective weed killer. Since it’s selective, it won’t accidentally destroy your lawn, even if you apply it throughout your grass. This means you can easily use Tenacity on both newly seeded turf and already established turf depending on your preferences.

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.

Even better, many homeowners and lawn caregivers appreciate that you can mix Tenacity weed killer 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-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 4 to 8 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-markWhat Weeds Does Tenacity Kill?

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 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-markDoes Tenacity Kill Crabgrass?

Yes, tenacity is extremely effective at killing crabgrass. In addition to crabgrass, Tenacity Herbicide is effective at killing numerous other weeds including the following:

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

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.