Tenacity Herbicide should be applied before soil temperatures reach 55 degrees if using as a pre-emergent. If as a post you would apply when the target weeds are actively growing and healthy.
Tenacity Herbicide is not labeled for sandspur. We suggest Pastora Herbicide instead. It is labeled to control sandbur aka sandspur when used as directed on the product label for post or pre emergent control
Tenacity Herbicide is not labeled to control poa annua/annual bluegrass as a post emergent application and will only suppress poa annua when used as a pre-emergent.
It is recommended that you do not mow 2 days before or 2 days after the application of Tenacity Herbicide.
Tenacity Herbicide is not labeled to control orchardgrass. Unfortunately, we do not know of any selective herbicide that will kill orchardgrass without harming your desirable turfgrass. It is usually recommended to spot treat the orchard grass as much as possible with a non-selective product like RoundUp QuikPro, and then replant in those areas in a couple of weeks when the orchard grass is gone.
Tenacity Herbicide is not an organic pesticide. Organic pesticides are made from naturally occurring ingredients. Non-organic pesticides are created synthetically.
Post-emergent herbicides like Tenacity Herbicide work best when the target weeds is young and actively growing and temperatures are between 65-85 degrees..
The product label states that Bermuda grass is sensitive to Tenacity but it would not be recommended as product to eliminate it since it is not labeled for this use. Turflon Ester would be a better option for removing bermuda from cool season turf.
Tenacity is labeled for postemergent control of nutsedge. However, the product label does state that weed control with postemergence applications require a second application after 2 to 3 weeks. You should also make sure that you apply the Tenacity to young, actively growing weeds with a non-ionic surfactant.
Tenacity is not labeled for quackgrass elimination. We do carry a similar product called Certainty that is a selective, post-emergent that is labeled to eradicate quackgrass. Please refer to the product label for full mixing and application for the best results.
For the best application times for your region, we recommend contacting the local extension office directly and speaking with the Master Gardener.
It is safe to apply Tenacity Herbicide at or near seeding for most types of turfgrass for pre-emergent control. You should avoid spraying Tenacity on newly germinated turfgrass plants. Please refer to the product label for complete application instructions. You would only need to use a surfactant when applying Tenacity for post-emergent weed control.
There is no specific time that you need to wait after using an herbicide like Tenacity before you can apply a fertilizer. As long as the turf is healthy and you are following the directions on the product labels for what you are applying, then you should not come across any problems. Please see our Lawn Care Schedule for additional tips.
The product label states that Bermuda grass is sensitive to Tenacity but it would not be recommended as a product specifically used to kill it.
Per the product label for Tenacity Herbicide: Do not plant any crop other than turfgrass species for 18 months after the last application of Tenacity or injury may occur.
No, Tenacity Herbicide will not eliminate ryegrass. If you want to eliminate ryegrass in cool season turf, we would recommend using Turflon Ester Ultra. The mixing rate is 3/8 - 3/4 oz. per 1,000 sq. ft.
We recommend using a Non-Ionic Surfactant with Tenacity Herbicide.
This will depend on the target weed you are dealing with in the lawn. If you have a thick lawn that would prevent contact with the target weed you should mow for better contact before applying Tenacity. It is recommended not to mow within 2 days before or after applying a herbicide.
