We would recommend removing the dead bentgrass before planting your seed after using Tenacity Herbicide.
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.
We recommend that you let the Tenacity Herbicide application dry completely and then applying the insecticide.
Tenacity Herbicide is not listed to control any type of vines not can it be used over juniper. We would recommend carefully treating using a non selective such as Roundup directly to the vine. This is best done if the vine is cut and applied directly using a small paint brush to the fresh cut surface. Or hand pulling is the other option.
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 is labeled safe for fescue lawns however can ONLY be applied to bermuda turfgrass when it is dormant without the risk of injury. Tenacity can be used for pre and post emergent (with Non Ionic Surfactant) control of clover but will only suppress poa annua, it will not fully control it.
Since poa annua and cool season grasses are so closely related, there are few products that will kill the poa annua without also harming the lawn. For Poa Annua in cool season turfgrasses, we recommend a spot-treat with a Roundup-type product and then reseed with the desirable grass type in those areas.
Applying a pre emergent like Pendulum 2G or Dimension 2EW in late fall and early spring to prevent weeds like poa annua, clover, crabgrass, and many other grassy and broadleaf weeds from germinating is also helpful.
Please view our Lawn Care Schedule Calendar for more information.
As stated on the product label of Tenacity, this product should be applied when there is no rain in the forecast for at least 48 hours. "If rainfall (0.15 inches) has not occurred within 10 days after preemergence application, activate with 0.15 inches of irrigation." This product can be applied to established, tolerable turf types.
Please be sure to review the product label for more information and complete application instructions.
Tenacity Herbicide is labeled for post emergent control of actively growing lawn burweed (spurweed, stickerweed, sandbur, sanbur, and sandspur) but will not offer any pre emergent control to prevent sandbur from germinating. When using Tenacity for post emergent control of weeds, a Non Ionic Surfactant is needed.
View the full list of Weeds Controlled (Pre & Post Emergent) on page 9 of the product label.
If Tenacity Herbicide or any herbicide is exposed to extreme freezing or heat temperatures, the concentrate can and would lose efficacy. When stored in cool dry and temperature controlled environments, the shelf life is 3-5 years.
Tenacity Herbicide cannot be used on residential St Augustine lawns and will not eliminate woodsorrel.
To control woodsorrel (also known as oxalis) in a St Augustine lawn, you could use a product like Hi Yield Atrazine, or Fertilome Weed Free Zone.
It is recommended to apply a pre emergent like Pendulum 2G in Fall and Spring. (55 degrees in the Spring / Between 70 and 55 degrees in the Fall). Pre emergents prevent weeds from germinating which will help cut down on the amount of post emergents needed during growing seasons.
View our St. Augustine Lawn Care Guide and Warm Season Calendar Schedule for more information.
Yes, Tenacity Herbicide can be shipped to Minnesota. This product is only restricted to ship to Alaska and Puerto Rico.
Tenacity Herbicide should be applied on a non-windy day as directed on the label.
It would be best to wait to apply Tenacity Herbicide until the grass has completely dried before the application. Be sure to mix in a Non Ionic Surfactant when doing post emergent applications.
Tenacity Herbicide can be applied at the same time as seeding (unless grass is more than 20% stand of fine fescue). If application cannot be done within 7 days of seeding you would need to wait a minimum of 30 days, or until the seed has emerged and been mowed at least twice before applying to the lawn.
According to the Tenacity product label, you will need to mix 1 tsp of product + 3 tsp surfactant with 2 gallons of water for spot treatments applied at a rate of 1 gallon per 1,000 sq ft. It is advised to use a dye like Turf Mark Blue with it so you can make sure to not overlap if you plan to do a broadcast application on the property. Repeat applications can be done after two to three weeks for continued post emergent weed control.
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 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.
