tenacity herbicide st augustine Tenacity Herbicide

Tenacity Pre and Post Emergent Herbicide

As both a pre- and post-emergent, Tenacity offers control of weeds both before they emerge from the soil’s surface and after they’ve appeared above the soil.

Mesotrione -- 40.0%
Other Ingredients -- 60.0%

The concentrate is specifically used for certain warm season and cool season turfgrass species listed on the product label: Kentucky bluegrass, centipedegrass, buffalograss, tall fescue, perennial ryegrass, fine fescue and St. Augustinegrass.

DO NOT use Tenacity on bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum and bermudagrass as these turfgrasses are sensitive to Tenacity applications. *For a list of weeds controlled, see product label.

Technical

Active ingredient: Mesotrione ......40.0%

How to Use Tenacity Herbicide

An eight oz. bottle of Tenacity can cover one to two acres of a property when broadcasting for weed control after mixing with 30 gallons of water per acre. A bottle of Tenacity will also come with a syringe for spot treatments.

Pre-Emergent Applications:

Apply Tenacity at four to eight fl. oz. per acre in at least 30 gallons of water per acre prior to weed seed germination. Do not exceed five fl. oz. per acre per application to perennial ryegrass or fine fescues or mixed stands that contain greater than 50 percent perennial ryegrass and/or fine fescue. Do not exceed four fl. oz. per acre to St. Augustine grass sod. Make application close to anticipated weed seed germination.

Post-Emergent Applications:

Apply Tenacity at four to eight fl. oz. per acre in at least 30 gallons of water per acre. Apply with a nonionic surfactant like Southern Ag Surfactant. A repeat application after two to three weeks may be required for adequate weed control.

Tenacity will begin working to kill weeds immediately, but you may not see a difference for two or three weeks. You may also see some plants turn white after an application of Tenacity. Some weeds may need a follow-up application. If you are spot-treating, mix 1/2 a teaspoon of Tenacity with 1 1/2 teaspoons of surfactant in one gallon of water.

Surfactants are recommended to use in combination with Tenacity to increase herbicide effectiveness by reducing surface tension of water so that herbicides can penetrate the soil and kill weeds more effectively.

Read the product label thoroughly before applying. Excessive use of this product can cause a temporary burn or loss of color in your yard. It may cause non-permanent whitening of the turfgrass foliage. These symptoms appear five to seven days after the application and may last for several weeks.

Label | SDS

For more information, refer to the product label.