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.
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.
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.
Tenacity Herbicide, as well as any other herbicide, should not be applied to a lawn that is stressed due to drought conditions as you risk further damage being done to the lawn.
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.
Tenacity Herbicide will kill the crabgrass, weeds, and clover eventually. However, if you are seeding you may want to remove the dead weeds to allow the seeds more room to grow. Otherwise, you can just leave it as is.
Tenacity Herbicide is only labeled to be used on Bermuda when it is fully dormant, otherwise it can be sensitive to applications and could harm it. It is not recommended for elimination of Bermuda or desired Bermuda turf.
Tenacity Herbicide can last in the soil up to 30 days if used as a broadcast pre emergent treatment, so you would need to wait at least 30 days after an application before putting in any new seeds.
Tenacity Herbicide can be applied in the summer and works best on crabgrass that has just emerged up to the 4 tiller stage. Keep in mind that the best temperature range to apply most herbicides, including Tenacity, is between 65-85 degrees. We recommend early morning or late evening applications to avoid damage to your lawn.
Tenacity Herbicide cannot be used on home lawns that have St Augustine. It is only for use on St Augustine in sod farms.
Tenacity Herbicide is not labeled to prevent or eradicate lespedeza.
Tenacity Herbicide reapplication times can vary depending on the target weed and application. Please refer to the product label for complete information.
Tenacity Herbicide is not specifically labeled to treat deer tongue grass.
No, Tenacity Herbicide should only be applied to the turf grasses listed on the product label. For nutsedge in landscaped areas it is recommended to spot treat the sedge with a glyphosate or Round Up type product directly. We recommend Roundup QuickPro 1.5 oz. packs for ease of use.
It is not recommended to use a hose-end sprayer to treat your lawn with Tenacity Herbicide or any other herbicide. The problem with using hose-end sprayers is that they are not very accurate, and you can wind up dispensing more or less product than recommended per area. This can lead to less than desirable results.
Tenacity Herbicide is not labeled to treat beggarweed. Fertilome Weed Free Zone is labeled to treat beggarweed on listed grasses. Please see the product label for complete application instructions.