When using Tenacity Herbicide as a pre-emergent and seeding, you can apply Tenacity before or at the time of seeding for best results as long as you are planting a turfgrass that is listed as tolerant on the product label (Kentucky bluegrass and tall fescue are tolerant). The key time to avoid spraying Tenacity on new seedings, either as a pre-emergent or a post-emergent, would be when the new seedlings have started to come up but are not yet established. Once you see new seedlings, you would want to wait at least four weeks or until the new grass has been mowed twice, whichever is longer.
Please refer to page 12 of the product label for complete application instructions around seeding.
Tenacity Herbicide is not labeled for yarrow. This weed can be difficult to get rid of especially if the rhizomes are not fully removed which you would need to dig down about 12 inches.
Consider using Q4 Plus which is labeled for yarrow. Please refer to the product label to ensure your desired turfgrass species is tolerable.
Tenacity Herbicide is not labeled for Virginia Buttonweed.
Fertilome Weed Free Zone is labeled for cool and warm season grasses and labeled to treat Virginia Buttonweed. Keep in mind, typically if this weed is well established and mature - you will need 2 applications for complete control.
View the Fertilome Weed Free Zone product label for more information.
Yes, Tenacity Herbicide can be shipped to Minnesota. This product is only restricted to ship to Alaska and Puerto Rico.
We would advise to apply the Moss killer and wait about 7 days to apply Tenacity Herbicide along with the non ionic surfactant for post emergent control of weeds.
If applying Tenacity Herbicide for pre emergent control in late fall or early spring, the timing of the application is important in order to prevent weeds from germinating. For best results, Tenacity should be applied at the same time as overseeding for weed prevention. Results can also depend on the specific weeds you are targeting and if Tenacity is listed to control them as a pre emergent or as a post emergent.
For specific timing recommendations, we like to recommend checking with your County Extension Office for their recommendations as this can vary from region to region.
For a full list of Weeds Controlled by Pre/Post Emergent applications, refer to page 9 on the product label. Remember, for post emergent control of weeds with Tenacity – a non ionic surfactant is needed.
Yes, Tenacity Herbicide is labeled to control veronica speedwell. Please refer to the product label for the recommended rates for your specific turfgrass.
Tenacity Herbicide is best applied either 2 weeks before seeding or 2-3 weeks after seeding to prevent injury for Centipede lawns.
Please view the full product label for more information.
For perennial ryegrass, Tenacity Herbicide is applied at 5 oz per acre in 30 gallons of water. To treat 33 acres, you would need 21 x 8 oz bottles of Tenacity with 990 gallons of water.
Please view the full product label for more information.
Tenacity Herbicide is not labeled to control Poa Annua/Annual Bluegrass, it only states that it could cause injury to it if sprayed with tenacity. Since it is not specifically designed to control Poa Annua, a better product choice would be Echelon 4SC. Echelon 4SC is labeled for pre-emergent control of poa annua only.
According to the product label, apply Echelon 4SC Herbicide in August or September to established, non overseeded turf before Poa Annua germinates.
Consult your local Cooperative Extension Service for more specific applications timings for your local area since August and September are approximate timings.
Tenacity Herbicide is labeled to control foxtail both as a pre emergent before weeds germinate and as a post emergent when foxtail is actively growing. For post emergent applications, a non ionic surfactant is needed to be used in the tank mix.
View the full product label for more information.
Yes, you can apply Tenacity Herbicide to dormant centipede grass. Make sure to read and review the Tenacity product 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.
Tenacity Herbicide is not labeled to control torpedograss.
Drive XLR8 is labeled for torpedograss in Bermuda grass, Kentucky bluegrass, Buffalo grass, Fescue, Ryegrass, and Zoysiagrass. A Methylated Seed Oil Surfactant is recommended to be used for best results.
Per subnote 3 on page 9 of the Drive XLR8 product label, “Make 2 sequential applications of 1 fl oz per 1000 sq ft and an additional sequential applicaiton up to 0.9 fl oz per 1000 sq ft at 14-21 day intervals.”
Tenacity Herbicide is not labeled safe to use on bentgrass and per the product label can cause injury.
Please refer to the product label if more information is needed.
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 and listed safe for centipede lawns. When used for post emergent control of actively growing weeds, a non ionic surfactant is recommended for best results. The surfactant is not needed for pre emergent applications. Turf Mark Blue can be tank mixed to allow you to see where you have treated and to ensure thorough coverage and avoid overlapping.
Review the Tenacity product label and apply as directed to avoid possible injury to your turfgrass. Keep in mind, this is a strong herbicide so any overmixing, overapplying or applying when centipede is transition in or out of dormancy can injure the lawn. Some whitening of the weeds and turfgrass is normal as this is part of the weed killing process, but the color will return in 3-4 weeks at most or after the next 1-2 mowings.
Tenacity Herbicide is not labeled for perennial peanut also known as "Florida Alfafa". Grass Out Max is labeled for perennial peanut for control of grassy weeds. 2,4-D Amine Herbicide is labeled for this weed around specific crops. Please view the product label here for more information.
We also recommend contacting your local Master Gardener with the Cooperative Extension Office for recommendation proven to be effective in your area.
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. We recommend contacting your local cooperative extension office and speak with the master gardener in your area for advice for specific timing in your area.
