Tenacity Herbicide should not be used within 3 feet of desirable trees or ornamentals.
Tenacity Herbicide is not labeled to be used on alfalfa or pastures so would be recommended to keep applications at least 10 feet away and avoid any drift/contact from contacting the areas.
If the Tenacity Herbicide is used on semi-dormant grass, it may harm the turf as you have seen since it is only labeled to be used on fully dormant bermudagrass. You can wait it out to see if the bermuda grows back or you would wait at least 3-4 months to reseed.. The label does not give a specific time frame of reseeding with bermuda when Tenacity is used but since it is shorter-acting than other pre-emergents so as long as the residual of Tenacity is gone, you can reseed/sod.
It depends on what type of turfgrass Tenacity Herbicide was applied to. If the grass is labeled tolerant to the product then it will bounce back as long as it's a healthy lawn. We would recommend to contact your county extension office to identify if it's a disease.
is only labeled to be used in turfgrasses for weed control. If there are no desirable plants in the area where you have rock areas, it should not be an issue to just spot treat the weeds there directly, but usually something like RoundUp QuikPro is more used in this case.
Tenacity Herbicide is not labeled for horsetail.
Tenacity Herbicide is not labeled for coltsfoot. You can see the article below from Washington State where they have done studies on the plant and the recommendations for control. There do not appear to be any herbicides specifically labeled for this weed currently.
Coltsfoot Weed
https://www.nwcb.wa.gov/weeds/european-coltsfoot
Tenacity would be applied as a pre-emergent in spring when soil temperatures are about 55 degrees. This will vary depending on your location, so we advise to reach out to your local extension office for advise on perfect timing in your area. Keep in mind that Tenacity only last about 30 days in the soil when applied as a pre-emergent. So if you are not overseeding your turfgrass, then we recommend selecting a different product such as Barricade 4L.
Tenacity Herbicide can be used for pre-emergent control once the soil temperature in your region reaches 55 degrees Fahrenheit, and can also be used for post-emergent control if weeds are actively growing. You can refer to our Lawn Care Schedule for Warm Season Grasses for more information on the best timing for treatments on your specific lawn type. You may also reach out to your local cooperative extension office for timing application advice specific to your area.
If you are applying it as a post-emergent herbicide, then Tenacity Herbicide should be applied when there is no rain in the forecast for 24 hours. If you are using it as a pre-emergent, then it would need to be watered in and could be applied before rain as long as there is not so much rain that the application would just get washed away.
We would not recommend using this product on dormant centipede. If the Tenacity Herbicide is used on semi-dormant grass, it may harm the turf. Tenacity also does not have very good cool-weather performance as a post-emergent. If you would like to share some of the specific weeds you are targeting, then we may be able to better assist you.
Tenacity Herbicide is labeled for pre and post emergent control for specific listed weeds. Please refer to the Weeds Controlled Table on page 9 of the product label to see if your target weeds are controlled by pre and/or post emergent applications. When appying Tenacity Herbicide for post emergent control of actively growing weeds, a Non Ionic Surfactant should be used for best results.
If you are applying Tenacity Herbicide for a crabgrass pre-emergent, then you would apply in late early spring before soil temperatures reach about 55 degrees. Keep in mind that if you are not overseeding in the spring, you usually want to use a different pre-emergent with longer soil residual or add another one for longer and more complete weed prevention.
We have more information in our Crabgrass Pre-Emergent Guide here.
Tenacity Herbicide is safe to use in a yard where pets and wildlife frequent as long as they are out of the area during the application. They can safely return after the area has dried typically after a few 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.
Unfortunately, there is no herbicide that will get rid of weeds permanently. Tenacity Herbicide, like other herbicides, can be applied up to 3 times a year, at 2 to 3 week intervals, on a yearly basis as long as you do not go over the max annual rate per area. It does only last up to 30 days as a pre-emergent application. It may be possible to eventually see reduction of weeds but keep in mind that the elements as well as birds can eventually introduce new weed seeds into your yard.
Whenever a lawn has large amounts of fine fescue its recommended to not use Tenacity unless some damage can be tolerated. Typically applying it as a pre emergent will lead to less harm than using it as a post emergent on a sensitive blend. We'd suggest applying the Tenacity as a pre emergent first, then wait 2-3 weeks to seed. Or seed and apply Tenacity 2 weeks after seeding.
No, Tenacity Herbicide should only be applied to the turf grasses listed on the product label.This product cannot be used in or around edibles.
Tenacity Herbicide should not be applied to ornamental beds or areas where you intend to plant anything other than listed turfgrasses within at least 18 months, per the product label. We recommend you do not apply Tenacity where you intend to plant ornamentals or that you create raised beds or remove the soil where Tenacity may have been applied.
