Tenacity Herbicide is not labeled to control Poa Annua/Annual Bluegrass as a post emergent application. The label only states that it could cause injury to it if sprayed. It is only labeled to be used to suppress poa annua when used as a pre-emergent.
If you are doing a full lawn renovation and wanting to kill existing plants before sodding, then we would recommend using a non-selective herbicide to clear the area before planting. You could use a product like RoundUp QuikPro for this application. Then after any existing plants have died and the lawn is prepared, you could put down your sod. We would suggest applying Tenacity after the sod is down as a pre-emergent (or post-emergent as needed) as long as the turf is one that is listed as tolerable on the product label. Keep in mind that the best time to use Tenacity for bentgrass will be in late Summer/early Fall.
It is not recommended to apply an insecticide within 7 days of applying Tenacity Herbicide.
As you probably know, Centipedegrass is a very sensitive species of turf so many products that eliminate the crabgrass and other weeds can also cause damage to your lawn. Tenacity is a great pre- and post-emergent herbicide that will control crabgrass along with many other types of weeds without harming your centipede lawn. Make sure to read the Tenacity label very carefully and mix exactly what is recommended as this is a strong product and mis-using it can cause temporary turf injury. When applying Tenacity it is highly recommended to use a temporary turf colorant like Turf Mark Blue to allow you to see where you are spraying. Overlapping your application of Tenacity can cause temporary whitening of the lawn as well, but the color will return in 3-4 weeks at most. Please let us know if you have any other questions.
According to the Tenacity product label for smaller applications, you will need to mix 1 tsp of Tenacity and 3 tsp of surfactant to 2 gallon of water, using 1 gallon each to cover 1,000 sq ft.
Tenacity Herbicide should not be used within 3 feet of desirable trees or ornamentals.
Tenacity Herbicide can be used when weeds are actively growing. It also can be applied when seeding with some grass types. You can check with your local cooperative extension office Master Gardener for specific timing in your area.
Yes, Tenacity can be used to kill wild violet in fescue grass.
No, Tenacity Herbicide is not labeled to be used on Centipedegrass nor is it labeled for dollarweed. For small lawns, Hi-Yield Atrazine Weed Killer or Image Kills Nutsedge would be good safe options. Blindside or MSM Turf are options for larger areas.
No, Tenacity Herbicide should only be applied to the turf grasses listed on the product label.
Roundup products contain glyphosate which is non selective so kills pretty much anything that it is applied to. Selective herbicides like Tenacity Herbicide only kills those weeds that are listed on the product label and are generally safe for use on turfgrass.
Tenacity is not labeled for Johnson Grass but it is labeled for yellow nutsedge. Acclaim Extra Selective Herbicide will control seedling Johnsongrass, and it will suppress rhizome Johnsongrass and is safe for use on cool season turf.
Yes, Tenacity Herbicide can be applied prior to, at, or just after seeding as directed on the product label.
Tenacity is not labeled for use on pasture land. Pasture Pro Herbicide may be a better option.
The best temperature range to apply most herbicides, including Tenacity, is between 65-85 degrees. For the best specific application times for your region, we recommend contacting your local extension office directly and speaking with the Master Gardener.
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 can find a full list of weeds Tenacity Herbicide targets here: Tenacity Product Label. There should not be any issues using Tenacity Herbicide and Sedgehammer Herbicide at the same time as long as the turf is established and not under other significant stress. Tenacity Herbicide states the following in reference to tank mixing. We always recommend doing a small tank mix test before application.
"Tenacity has been tested in tank mixtures with Barricade 65WG Herbicide (prodiamine), Vanquish® (dicamba), Turflon® ester (riclopyr), Spotlight™ (fluroxypyr), Quicksilver™ (carfentrazone), Basagran® (bentazon), Princep® (simazine), and AAtrex® (atrazine) for safety and efficacy on turfgrasses. Tenacity must be applied at reduced rates (4 fl. oz./A or less) if tank mixed with atrazine, bentazon or simazine. Other tank mixture partners may be safe but have not been tested. Turf managers wanting to tank mix Tenacity with other herbicides should test on a small basis for compatibility, safety and efficacy before treating large areas. See product labels for directions and precautions"
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.
It would be best if clippings were bagged after the first mow and application of Tenacity Herbicide. Bagging will help with lawn health.
