Tenacity Herbicide is not labeled for zoysiagrass.
No, Tenacity Herbicide cannot be used on residential St Augustine lawns. It is only for use on St Augustine grown for sod as listed on the product label.
Some folks do use food coloring/dye to mark where Tenacity Herbicide has been applied. How much you use depends on the depth of color you want. We apologize but cannot advise on the exact amount.
No, Tenacity Herbicide is not labeled for application to bahia.
As long as you are not applying either product during the heat of the day, you can use SpeedZone the same day as Tenacity Herbicide. Just allow areas to dry between treatments
Tenacity Herbicide is not labeled to be applied in or around edible vegetation. When applying the product to your lawn, you would want to be sure to avoid over-spray or drift of spray applications onto the fruit trees, and avoid spraying within the drip line of any edible trees.
While you could potentially do a split application with Tenacity for a fall pre-emergent, usually you would wait at least 6-8 weeks between applications in that case. Keep in mind that the annual maximum application rate for Tenacity is 16 oz per Acre per year (used in 12 months), so you want to be careful you are not exceeding that rate. Be sure, too, that you are not exceeding the application rates for your type of turfgrass.
Tenacity Herbicide only states that it can cause undesired injury to kikuyugrass but it does not give instructions on how to control with Tenacity, which leads us to believe it may only temporarily damage it rather than actually kill it all the way out. Once your new seed has come up and become established to tolerate herbicide use, you could use Hi Yield Turflon Ester to spray over the kikuyugrass to eliminate it from the ryegrass in the lawn.
Per the Hi Yield Turflon Ester Product Label for Control of Kikuyugrass:
Apply Hi-Yield Triclopyr Ester at a rate of 3/8 to 3/4 fluid ounces per 1000 square feet. To improve activity, MSMA herbicide may be tank mixed with the ½ quart per acre rate of Hi-Yield Triclopyr Ester. Three to four additional applications at 4 to 6 week intervals may be required to achieve control of kikuyugrass
Tenacity Herbicide not labeled for zoysiagrass and would not be recommended to apply to it at all.
We don't recommend using Tenacity Herbicide to get rid of weeds in ornamental plants, it's not labeled for this use. If you have broadleaf weeds, you will need to spot treat with a non-selective herbicide. If you have grassy weeds, you can use a product like the Bonide Grass Beater around listed ornamentals on the label.
According to the product label, you will use 1 teaspoon of Tenacity Herbicide and 3 teaspoons of surfactant per 2 gallons of water. You should expect to need 2-3 applications at 2-3 week intervals to control nimblewill.
You would only need to water in the pre-emergent application of Tenacity Herbicide on dormant bermuda if you felt you did not use a sufficient amount of water during the initial application. Typically the goal is to create an even barrier in the soil with the chemical so the weeds cannot penetrate through it. Light watering no more than a 1/2 inch of rainfall equivalent is fine.
Since a surfactant is designed to reduce water tension during spraying, applying it separately is unlikely to improve results. If you were applying the Tenacity as a pre-emergent herbicide, then there should not be any detriment to the application. If you were applying as a post-emergent, then you may need to reapply the product in 2-3 weeks as a spot treatment for the target weeds.
We would not recommend Tenacity Herbicide be applied to flower beds and ornamental plants. According to the product label: “Avoid over-spray or drift of spray applications onto ornamentals or flower beds and gardens. Roses and daylilies are sensitive plant species. Avoid applications over the top of exposed roots of trees and ornamentals."
Yes, the whitening of the target weeds and sometimes the turfgrass is normal per the manufacturer. Tenacity Herbicide is labeled to be used on Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, & Fine Fescue. It is not labeled for Bermudagrass or Centipede lawns and can cause turf injury. The whitening you see is the active ingredient working its way into the weeds/grass which causes the loss of chlorophyll followed by the weeds dying off within 1-3 weeks..If using on cool season turf, you can reseed those damaged areas if needed.
Tenacity Herbicide is applied at 5oz to 8oz per acre (depending on the turf type) or for spot treatments, 2 tsp + 3 tsp Non Ionic Surfactant per gallon of water per 1,000 sq ft. Please refer to the product label for the mix rate and turf type you have.
For Spot Treatments with Tenacity Herbicide, mix 1 tsp Tenacity + 3 tsp Non Ionic Surfactant in 2 gallons of water and apply one gallon of mixed solution per 1,000 sq ft.
Tenacity Herbicide is one of the few products that can be applied at seeding, prior to seeding, or just after seeding of new grasses to help prevent and control weeds at the same time. Be sure to check the label for any restrictions to certain turf types as Fine Fescue is more sensitive than other species when using Tenacity at seeding. Be sure to use a Non Ionic Surfactant with the Tenacity when applying for best results.
Tenacity Herbicide is not labeled safe for use on Floratam species and is only for use on St Augustine grown for sod.
Tenacity that has been mixed with water and a surfactant should be used within 24 hours of mixing and then discarded. If it is in its original container and stored away from extreme temperatures, it will have a three year shelf life unmixed.
When using Tenacity Herbicide as a post-emergent, you can apply anytime before seeding, but keep in mind that it may take a couple weeks to kill the target plants, so you would want to wait for those plants to die before aerating and reseeding. It is recommended to rake out the dead plant matter prior to aerating and reseeding the lawn.
