Tenacity Herbicide should not be used around or on desirable ornamentals and/or trees or used within 3 feet of trees or ornamentals. Unfortunately, there is not a product that can be used to reverse the effects of the Tenacity sprayed on intolerant plants.
No, Tenacity Herbicide is not organic.
Tenacity should be applied outside of the dripline of the trees, and take special care not to allow any overspray or drift to contact the trees.
There is not a specific limit on the number of spot treatments that you can make using Tenacity Herbicide as long as you do not exceed the annual maximum of 16 oz Tenacity per Acre or per crop. Typically you would wait at least 2-3 weeks between applications to the same areas. Be sure that you follow all the product label instructions as far as timing with seeding and other restrictions.
For best results, Tenacity should be applied along with a surfactant.
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.
We are not aware of anything that can be added to Tenacity Herbicide to cause the plant color to change as it dies and it already causes a color change itself. Per the product label: Foliage of treated weeds cease growth after application, then turn white (loss of chlorophyll) and death may take up to three weeks. A repeat application is required after two to three weeks for improved postemergence weed control. A non-ionic surfactant should be added in postemergence applications
Tenacity Herbicide is labeled to eradicate some broadleaf weeds. Please refer to the product label for a list of all weeds controlled.
Yes, Tenacity Herbicide would be safe to apply now.
Yes, Tenacity Herbicide can be applied as a broadcast application.
For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.
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.
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.
When you apply Tenacity Herbicide will depend on how you are using it. When using Tenacity as a post-emergent herbicide, you should spot treat target weeds when they are young and actively growing, which may be in spring, summer, or fall. Generally, you do not want to use any post-emergent herbicides when temperatures are over about 85 - 90 degrees since your desirable grass will be more sensitive and the target weeds will not be growing when it’s that hot. Tenacity should be used as a broadcast application pre-emergent when renovating lawns listed as tolerant on the product label. Since these are primarily cool-season lawns, this application is generally done in the fall.
Tenacity Herbicide is not labelled to control or suppress bindweed (creeping jenny). Quinkill Max (Drive) can be used for bindweed on most types of turf (not St Augustine).
There is no wait time after applying Tenacity Herbicide to re-seed unless you are re-seeding with fine fescue. For fine fescue, it is recommended that you wait at least 30 days after application to re-seed.
Tenacity is not labeled to control undesirable ornamental plants, although it may harm them if sprayed accidentally. You will need to remove physically all the parts of the iris - including the rhizomes in the soil – in order to prevent these plants from regrowing the following year. You can use a glyphosate product such as RoundUp QuikPro to kill the above ground plants, but you will need to remove the rhizomes after spraying. This article has easy-to-follow directions on this treatment, which is best done in the fall.
If applying Tenacity Herbicide as a pre-emergent you would want to apply after applying any top soil to other matter to the top of the soil to prevent weeds growing in the new soil
We would not suggest mixing Tenacity and a glyphosate product as there would not be much benefit in doing so. You could mix a pre-emergent like Dimension 2EW or Prodiamine 65 which would cover many broadleaf and grassy weeds.
