You will need to wait one year after Tenacity is used in a given area before you can plant edible vegetation in that area.
Yes, you could potentially apply Tenacity Herbicide after using a weed and feed product, but you should wait about 2 weeks between applications so that you do do not put too much stress on the grass at one time.
You should not mow within 2 days before or after an application of Tenacity Herbicide or any other herbicides.
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.
Tenacity Herbicide is not labeled for sandburs.
Tenacity Herbicide is best applied at the same time as when you overseed for preemergent control of weeds.If you have already overseeded, then it is best to wait until after the 2nd mowing or 30 days (whichever is longer) to apply Tenacity with a Non Ionic Surfactant for post emergent control of 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."
You can apply Tenacity as a pre-emergent anytime before seeding a cool-season lawn. If you are planning to overseed this spring, however, you cannot apply a product that has Dimension in it before seeding or until the new grass is well established (Dimension will prevent the turfgrass seeds from germinating). We would recommend that you aerate before applying any kind of pre-emergent so that you do not disturb your soil applications. Please review our Cool Season Lawn Care Schedule and Guide for more information.
Tenacity is only labeled for use in Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass (grown for sod only). You should not use Tenacity Herbicide on or around desirable ornamental plants or groundcovers, such as pachysandra.
Normally it is fine to mix two herbicides like this together. It is always recommended to do a small jar test first just to make sure they combine well and there is no clumping or separating. You will want to follow the label instructions for both products on tank mixing or how to do a compatibility test.
No, Tenacity Herbicide is not labeled for zoysiagrass therefore could injure or kill the turfgrass.
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.
Per the manufacturer, you will need to wait 18 months after the last application of Tenacity Herbicide to plant anything other than turfgrass. They also advise that you do not use the grass clippings from treated turf as mulch. Please be sure to review the product label for more information and complete application instructions.
Per the manufacturer, the 18 month waiting period after an application of Tenacity Herbicide applies to food crops but there are some trees that can be sensitive as well. Digging a hole where Tenacity was applied should not have much active ingredient residue, especially if the sod/grass is removed to plant the tree. Waiting 3-6 months after application would be acceptable.
If not applied around the same time you should wait 1 week to apply another herbicide. Tenacity Herbicide when mixed with a non ionic surfactant will control crabgrass up to the 4 tiller leaf state only and is best applied when it just emerges. Drive XLR8 is actually the top product for crabgrass and can kill it best when it just emerges or after it has fully matured just not as good during the 2-4 tiller (middle) state. A methylated seed oil surfactant is also recommended for best results with Drive XLR8. Which you use can depend on the tiller stage of the crabgrass but Drive is usually the go to for post emergent control of crabgrass.
Tenacity Herbicide does not have a strong odor when it is mixed with water or during the applicaiton. There should be no odor after the product is dry.
Tenacity Herbicide can be tank mixed with other herbicides, fungicides and insecticides when following the tank mixing instructions listed on the product label. We suggest doing a compatibility test in a small mason jar first to ensure the products mix thoroughly without clumping or separation.
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.
According to the product label of Tenacity, "Wait until the newly germinated turf has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence application." Please be sure to review the product label for more information and complete application instructions.
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.
