If the use rate of Tenacity Herbicide is of 5 oz per acre, you'll need to use 0.11 oz or 6/10 of a teaspoon per 1,000 square feet.
If you are using Tenacity Herbicide as a pre-emergent herbicide, then you should aerate first and then apply Tenacity at the same time as seeding or just before. Do not wait until the new grass has started to come up before using Tenacity. If using Tenacity as a post-emergent, then 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 would be best if clippings were bagged after the first mow and application of Tenacity Herbicide. Bagging will help with lawn health.
Tenacity Herbicide cannot be applied to Bermuda unless fully dormant.
Tenacity Herbicide does not list English ivy on the product label, but it is labeled to kill ground ivy so we would not recommend applying it to any desirable ivy.
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 can be used at the time of seeding for most grass types. Fine fescue is the only grass seed that should not be used at the time of application. It is recommended that you wait 2-4 weeks after an application of Tenacity Herbicide to reseed with fine fescue.
You can apply Tenacity anytime before seeding up to the same time that you seed. If you are applying Tenacity as a post-emergent herbicide, then it is usually best to do that application first and wait for the treated plants to die so you can remove any excess dead plant matter before you overseed the lawn. Tenacity will not interfere with seed germination of turfgrasses listed as tolerant on the product label.
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.
The product label states that bermuda grass is sensitive to Tenacity but it would not be recommended as a product specifically used to kill it. Fusilade II can be used to get rid of bermuda grass in tall fescue. Please be advised that bermuda grass is extremely difficult to control and you will likely need to make several applications.
Tenacity Herbicide is safe for established Kentucky bluegrass and ryegrass applications.
Tenacity Herbicide calls for 5 to 8 oz of per acre, unless treating St. Augustine turf grown from sod, you would use 4 oz per acre. If you plan to use Tenacity at low rates of 5 oz per acre then you would use 0.11 oz per 1000 sq/ft or 0.45 oz per 4k sq/ft. If you want to use the high rate of 8 oz per acre then you would use 0.18 oz per 1000 sq/ft or 0.72 oz per 4k sq/ft. Be sure to use at least 1 gallon of water per 1000 sq/ft that you treat, and mix your non-ionic surfactant into the tank at the rate of 2 teaspoons per gallon of water. Spray foliage of target weeds until wet but not until the point of runoff. If a reapplication of Tenacity is needed, you can reapply after 2-3 weeks from your initial application.
According to the product label: Bentgrass, Poa annua, kikuyugrass, zoysiagrass, seashore paspalum and bermudagrass are sensitive to Tenacity applications. Avoid spraying these turf types unless control and/or injury can be tolerated. Maintain a five foot buffer between treated areas and bentgrass or Poa annua greens. While Tenacity is not labeled to kill zoysia it will most likely do so.
For best results, Tenacity should be applied along with a surfactant.
Tenacity Herbicide is not labeled for use in or around any edibles or vegetable gardens. Please visit our Herbicides for Edible Gardens Page for products that are safe to use around edibles.
Tenacity Herbicide is labeled to treat for actively growing ivy.
Tenacity Herbicide should not be applied near a water source including a lake or area of runoff to avoid contamination.
Tenacity Herbicide is safe to use in a yard where pets and children will frequent as long as they are out of the area during the application. They can safely return after the area has dried, typically at least 4-6 hours after application.
Products that have been mixed with water must be used within 24 hours after mixing. Please contact your Local Sanitation Dept for guidelines in your area on disposal of unused Tenacity Herbicide .
