Tenacity Herbicide can be safely applied to Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass (grown for sod only).
Tenacity Herbicide should not be applied in a mist blower/fogger. It can be applied with a hand pump sprayer or backpack sprayer for more accurate applications to the listed turf.
Tenacity Herbicide can be tank mixed with Atrizine. However, when it is, you will need to use Tenacity at the reduced rate of 4 ounces per acre or less.
Unfortunately there are no products available (that we carry or others carry) that will kill the Dallisgrass without killing the surrounding St. Augustine grass. The best option once it has emerged is to either spot spray or wipe on something like Round Up Quick Pro, or hand dig up the clumps of dallisgrass down to the root system and re-seed.
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"
Tenacity Herbicide cannot be applied to Bermuda unless fully dormant.
Tenacity Herbicide is safe for established Kentucky bluegrass and ryegrass applications.
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 should not be applied near a water source including a lake or area of runoff to avoid contamination.
Yes, it is possible for Tenacity Herbicide to inhibit growth of new seedings if over applied.
Yes, Tenacity Herbicide can be applied. You would need to seed at the same time or wait until you seed in 3 weeks to apply.
When mixing concentrates such as Tenacity Herbicide, it is always a good idea to add some water to your tank, add your concentrates, agitate the mixture, and then fill the rest of the water and agitate again before spraying. This video has a great overview of how to use this product.
Tenacity Herbicide is not an acid. You can use either type of wand with it with no issue.
There should be no issues applying Tenacity around the same time as a fertilizer like the Coron, as long as both label instructions are followed.
Tenacity cannot be mixed and then frozen for future use as the freezing temperatures would make the product ineffective.
Tenacity Herbicide is only for use on St Augustine when used in sod farms and cannot be used on residential St. Augustine lawns.
Tenacity is not labeled to control cheeseweed. The herbicides we carry that are labeled to control cheeseweed are Spectracide Weed and Grass Killer With Extended Control RTU, Goal 2XL Herbicide, Ronstar 50 WSP, and Aim EC Herbicide.
Yes, Tenacity Herbicide can be shipped to Washington state.
The product label states that Tenacity acts as a pre and post emergent on bentgrass so it should help prevent it for at least a few months if applied at the right time. As a post emergent, you would apply it as you start to see new signs of bentgrass growth at two to three week intervals for up to three applications. Twice a year would not be enough for a post emergent control but can help to prevent it. Bentgrass control may be more effective in the late summer/early fall just prior to onset of renewed bentgrass growth, rather than spring/early summer applications.
