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.
Since Tenacity is an effective herbicide for weed control prior to or during seeding of certain turfgrasses during turf renovation and the water is only acting as the carrier for the solution to get into the weeds, you should be ok to reseed if you are happy with the results. For post emergent applications, you will need to wait for the turf to be established after 2 mowings to reapply.
Yes, Tenacity Herbicide can be applied. You would need to seed at the same time or wait until you seed in 3 weeks to apply.
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 is only available in a liquid version.
Tenacity Herbicide would be a great product to use to treat for nimbleweed and can safely be used in fescue and other cool season grasses.
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 should not be applied near a water source including a lake or area of runoff to avoid contamination.
You can find a full list of weeds Tenacity Herbicide targets here: Tenacity Product Label. There should not be any issues using Tenacity Herbicide and Sedgehammer Herbicide at the same time as long as the turf is established and not under other significant stress. Tenacity Herbicide states the following in reference to tank mixing. We always recommend doing a small tank mix test before application.
"Tenacity has been tested in tank mixtures with Barricade 65WG Herbicide (prodiamine), Vanquish® (dicamba), Turflon® ester (riclopyr), Spotlight™ (fluroxypyr), Quicksilver™ (carfentrazone), Basagran® (bentazon), Princep® (simazine), and AAtrex® (atrazine) for safety and efficacy on turfgrasses. Tenacity must be applied at reduced rates (4 fl. oz./A or less) if tank mixed with atrazine, bentazon or simazine. Other tank mixture partners may be safe but have not been tested. Turf managers wanting to tank mix Tenacity with other herbicides should test on a small basis for compatibility, safety and efficacy before treating large areas. See product labels for directions and precautions"
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.
Tenacity Herbicide is not an acid. You can use either type of wand with it with no issue.
It is not recommended to mix certain insecticides, herbicides, or fungicides with Tenacity Herbicide. You should wait to apply insecticides 7 days after treating with Tenacity Herbicide to avoid potential turf injury. Other ingredients in the fungicides or herbicides would be fine to use at the same time if there are no resttrictions on the product label.
Tenacity Herbicide can be safely applied to Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass (grown for sod only).
Tenacity Herbicide is only for use on St Augustine when used in sod farms and cannot be used on residential St. Augustine lawns.
Tenacity Herbicide can be used as a pre-emergent or a post-emergent. A post-emergent application on Tenacity Herbicide would be to kill weeds that are already there. The product does not need to be watered in after application. For a pre-emergent application, the product is used to prevent weeds from coming up. It is recommended that you water the product in 1/2 inch after application to get the product into the soil.
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.