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.
Tenacity Herbicide is labeled for use on St. Augustine grass that is grown for sod only, not for use on residential St. Augustine lawns. Hi-Yield Atrazine Weed Killer is a pre- and post-emergent herbicide that can be used on St. Augustine lawns for a wide variety of weeds.
It is not recommended to mix certain insecticides with Tenacity Herbicide. You should wait to apply organophosphate or carbamate insecticides 7 days after treating with Tenacity Herbicide to avoid potential turf injury. Other active ingredients would be fine to use at the same time.
Tenacity Herbicide would only need a surfactant when using as a post emergent. For pre-emergence control you need to water the product in and apply before the weeds have germinated/emerged so it appears to be too late to benefit from that.
There are no time restrictions when applying Tenacity Herbicide along with insecticides or fertilizers. You can either spot treat or broadcast depending on how much of the target weed you are dealing with.
Tenacity Herbicide is labeled to control bentgrass but it does need to be applied when it is actively growing and healthy. Per the product label: Apply Tenacity at 5 fl. oz. per acre in at least 30 gallons of water per acre at two to three week interval for up to three applications. Apply with a NIS surfactant. Bentgrass control may be more effective in the late summer/early fall just prior to onset of renewed bentgrass growth, than spring/early summer applications
Tenacity Herbicide can be used for both nimblewill and wild violet. To control nimblewill, you should start applying Tenacity Herbicide in the spring (late-April). You may need to make two or three applications to get complete control. You can also apply Tenacity in late summer and fall, but you should initiate treatments by August for best results. For other weeds such as wild violet apply to young, actively growing weeds.
For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.
Tenacity Herbicide should only be used on St. Augustine grass that is grown on sod farms. It cannot be used on St. Augustine in residential lawns.
Tenacity Herbicide will not control moss. For moss in lawns, we would recommend using the Lily Miller Moss Out in granules or liquid.
Yes, Tenacity Herbicide can be tank mixed with Temprid FX, following the label instructions for each product. We would suggest doing a compatibility test in a small jar before mixing in a large tank.
Tenacity Herbicide is only available in a liquid version.
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. Be sure that your mix does not contain seed that will not be tolerable.
For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.
Tenacity Herbicide should be applied before soil temperatures reach 55 degrees if using as a pre-emergent. If using as a post-emergent you would apply when the target weeds are actively growing and healthy. You can check with your local cooperative extension office Master Gardener for specific timing in your area.
You do not want to scalp your lawn before applying herbicides. You should not mow within 2 days of an application of Tenacity Herbicide or any other herbicides. Keep in mind that you should not make a broadcast application of Tenacity on your lawn unless you are seeding or overseeding; otherwise, you may see whitening on your desirable turfgrass. Please let us know if you have other questions about this product or what may be most suitable for your application.
Yes, Tenacity Herbicide is safe for use on Kentucky 31 Tall Fescue as directed on the product label.
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.
Tenacity Herbicide is one of the few products that can be applied at seeding, prior to seeding, or just after seeding of new grasses to help prevent and control weeds at the same time. Be sure to check the label for any restrictions to certain turf types as Fine Fescue is more sensitive than other species when using Tenacity at seeding. Be sure to use a Non Ionic Surfactant with the Tenacity when applying for best results.
Tenacity Herbicide can be used to prevent crabgrass and will not effect perennial ryegrass when used as directed on the label. Do not exceed 5 fl. oz. per acre per application to perennial ryegrass
