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.
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.
Tenacity Herbicide should not be used within 3 feet of desirable trees or ornamentals. If treating actively growing grassy weeds, Fertilome Over The Top II Grass Killer can be used. The manufacturer recommends that you use caution during application because the spray can cause damage if it comes into direct contact with foliage.
We do always recommend that only mix the amount of Tenacity Herbicide you can use at a time. To dispose of any remaining you would not pour down any drain, but can use to go over some of the areas you were treating or you can pour into the dirt right next to the foundation of the home to prevent any run off to the nearby creek.
No, Tenacity Herbicide is not labeled for application to bahia.
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"
Yes, chelated iron can be used after using Tenacity Herbicide
You can view the full list of weeds controlled by Tenacity Herbicide on page 3 of the product label here. There are separate colums for pre-emergent and post-emergent control.
Tenacity Herbicide reapplication times can vary depending on the target weed and application. Please refer to the product label for complete information.
When using Tenacity Herbicide as a post emergent, it should not be watered in. It should be applied when there is no rain in the forecast for 24 hours after application.
Some folks do use food coloring/dye to mark where Tenacity Herbicide has been applied. How much you use depends on the depth of color you want. We apologize but cannot advise on the exact amount.
Tenacity Herbicide should be used just before the soil temperatures reach 55 degrees in early and late fall. Please contact your local cooperative extension office to determine the correct timing of the application as this will vary greatly from region to region.
If you have multiple sprayers, then the best thing for you to do is to calibrate your equipment using just water over a small area. For example, you can mark off an area that is 1000 sq ft (20 x 50 feet), fill your tank with 1-2 gallons of water, and then walk at your normal pace and see how much water you used to cover that area. It is most important that you use the correct amount of herbicide for the size area you are treating and think of the water as the carrier, rather than insisting on a specific amount of product per gallon of water. If you take this time to calibrate your sprayer once, then you will know how much water you use for the area going forward. Using a spray indicator dye is also a great tool so that you apply herbicides evenly over your yard.
No, you should not use Tenacity Herbicide on or around desirable ornamental plants or groundcovers, such as liriope. Please let us know what weeds you are targeting so that we can recommend an alternative product for you.
No, Tenacity Herbicide cannot be used on residential St Augustine lawns. It is only for use on St Augustine grown for sod as listed on the product label.
Tenacity Herbicide is not labeled for zoysiagrass.
Tenacity Herbicide should be applied when temperatures are between 65 and 85 degrees and when there is no rain in the forecast for 24 hours. If your temperatures reach above 85 degrees during the day, apply in the morning or evening when it is cooler.
Tenacity Herbicide is not labeled to prevent or eradicate lespedeza.
You do not need to water after a post emergent application of Tenacity.
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.
