Does Tenacity Kill My Grass

Tenacity is the brand name of the herbicide which contains the chemical called Mesotrione. Mesotrione is based on the naturally occurring compound called Leptospermone which is produced by the Bottlebrush plant or Callistemon citrinus.

Tenacity has become a trusted name among gardeners, farmers, and homeowners worldwide because of its effective role in controlling weeds in farms, flower beds, and lawns. It can be used to control more than 46 types of broadleaf weeds and grass species. In this article we will discuss Does Tenacity Kill My Grass.

Tenacity gets absorbed by the plants through the roots, shoots, and leaves and spreads to all of the tissues of the plant through both xylem and phloem translocation. This herbicide inhibits the photosynthesis process in plants which stops their energy supply and eventually kills the weed or plant.

Does Tenacity Kill Good Grass?

Tenacity can kill good grass if used incorrectly but it usually does not harm the good grass on your lawn and only work on the selected weed species. Tenacity will kill the good grass on your lawn only if you spray in a higher proportion than recommended.

Does Tenacity Kill Grass Seed?

Tenacity does not kill grass seed and can be used at the same time when you seed. Tenacity will prevent weeds from germinating in newly seeded or overseeded turf. The grass seed will get more chance to grow without the competition from weeds for nutrients and sunlight. It will also help the root establishment of the grass and will result in a healthier and denser lawn.

Apply tenacity at 5-8 fl. oz. /A prior to, during, or after seeding. Use a good quality non-ionic surfactant for the best result if weeds are present at the time of application. Apply Tenacity again after the second mowing or three to four weekends after emergence.

Does Tenacity Kill Crabgrass?

Yes, Tenacity can kill crabgrass. Crabgrass is the common name for plants of the genus Digitaria which has many stems and is built low to the ground. It is very invasive and a very common weed in most lawns. Crabgrass looks coarse, and light green, and forms clumps where it grows. The sprawling stems look like the legs of a crab and this is where it gets its name from. There are mainly two types of crabgrass such as smooth crabgrass and hairy crabgrass. They are both annual grasses and they spread the most during summer.

Tenacity is a good herbicide for getting rid of weeds like crabgrass. You can use Tenacity to get rid of this summer weeds easily.

Does Tenacity Kill Bermuda Grass?

Tenacity is not very effective at killing Bermuda grass and other herbicides such as Princep Liquid are recommended. Bermuda grass is a warm-season grass that requires full sun and good drainage to grow. Bermuda grass is known for its high heat, drought, and salt tolerance.

Tenacity might discolor the Bermuda grass and make it look pale or white but it will not effectively kill it and prevent it from spreading again on the lawn so Tenacity is not recommended for getting rid of Bermuda Grass.

Does Tenacity Kill Nutsedge Grass?

Tenacity is an effective herbicide to get rid of Nutsedge grass. Nutsedge is a persistent and invasive weed that grows in warm temperatures making it more available in warmer regions. They also spread to the colder regions during the summer and the spring months.

Yellow Nutsedge and Purple Nutsedge are the most common varieties of Nutsedge in the United States. Nutsedge can be identified by its distinct V shape with three sides and three points similar to a triangle compared to other blades of grass which are rounded.

Does Tenacity Kill Johnson Grass?

Tenacity does not kill Johnson Grass and will not work as an effective herbicide to control this grass. Johnson grass is an invasive weed species that rapidly produces colonies and is very competitive with other plants. They hamper the growth of other grass species and plants. They also produce high amounts of hydrocyanic acid which can be harmful to the cattle.

Tenacity is not an effective herbicide for killing or controlling Johnson Grass even though it might discolor the grass. Herbicides containing Glyphosate such as Roundup will be effective against Johnson Grass. But keep in mind that Glyphosate is nonselective and should be limited to spot treatments at rates required to control Johnson Grass.

Does Tenacity Kill Zoysia Grass?

Tenacity is not recommended to control zoysiagrass and is not considered to be an effective herbicide for controlling it. Tenacity will work well to kill the other grass on the lawn if your main lawn grass is Zoysia. Zoysia is a medium-coarse-bladed turfgrass and it has an emerald color.

Zoysia is a warm-season grass with improved cold tolerance and it prefers the sun. Zoysia is also known for being heat and drought tolerant making it a perfect choice for warm areas. This particular species of grass is also low maintenance as it requires less frequent watering and other care.

Herbicides consisting of glyphosate can be applied to zoysia grass to control it if necessary. Be careful while applying glyphosate as it is a nonselective herbicide and will kill all the grass it comes into contact with.

Does Tenacity Kill Centipede Grass?

Tenacity does not kill centipede grass which makes it a good choice for applying on lawns covered with centipede grass. Tenacity will work to eradicate other weeds in lawns that mainly have centipede grass.

Centipede grass has a thatch base and is light green to medium green in color. Centipede grass is usually grown in warm areas where there is enough sunlight and hot weather. Centipede grass has high heat tolerance and requires very little maintenance.

Tenacity will not kill the centipede grass on your lawn and thus can be used as an excellent selective herbicide to kill the other invasive species of weeds that are growing on your lawn and ruining the aesthetics.

Does Tenacity Kill Quack Grass?

Quack grass cannot be killed with Tenacity and will come back again on the lawn after usage. Quack grass is an invasive grass species that has flat leaf blades and dull green to light blue-green in color.

Quack grass’s blades can grow up to 3 to 12 inches long and on the surface, the blades are usually smooth to rough. They can be sparsely hairy but on the lower surface, they are smooth. A quick and easy way to identify the quack grass is to find the claw-like, slender auricles that clasp the stem.

Tenacity does not work well on Quack grass because the rhizomes are long-lived and remain in the ground from which they can spread again. Even the hand-pilling method fails as it breaks from the stem while pulling and spreads again from the remaining roots and rhizomes.

Herbicides like Roundup which contain glyphosate is the most effective for controlling Quack grass on the lawn. 

Is Tenacity Safe for Humans?

Tenacity is safe and non-toxic for children and pets. Tenacity does not contain any cancer-causing ingredients and has been certified as ‘reduced-risk’ by the Environmental Protection Agency. Always follow safety procedures while handling herbicides like Tenacity as it can still cause irritation on the skin with repeated contact. Always wear safety gloves, masks, eye protectors, and full-sleeved clothes while spraying herbicides like Tenacity