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 not labeled to control Poa Annua/Annual Bluegrass as a post emergent application. The label only states that it could cause injury to it if sprayed. It is only labeled to be used to suppress poa annua when used as a pre-emergent.
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.
For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.
Tenacity Herbicide should be used when the temperatures are consistently above freezing on a daily basis. Your target temperature range will depend on whether you are using Tenacity for pre-emergent or post-emergent applications. Please consult the product label for complete application instructions.
There are no restrictions on the label for Tenacity Herbicide regarding timing around application of beneficial nematodes. Unfortuunately, not too much is known about the possible effects of using herbicides when applying beneficial insects. We would not recommend mixing or applying Tenacity immediately after appying the nematodes. We recommend contacting the manufacturer of the nematodes you are using for their recommendation on how long to wait between these applications and which is best done first.
Tenacity is a great pre-emergent herbcide and can also be used for post emergent control on Chickweed, Clover and Oxalis on Kentucky Bluegrass, Centipedegrass, Buffalograss, Tall Fescue, Perennial Ryegrass, Fine Fescue, St. Augustine Grass(grown for sod only). When making post emergent applications, you need to use a non ionic surfactant.
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.
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 label for complete application instructions around seeding.
Per the label of Tenacity Herbicide, this product can be applied at the same time of seed, except fine fescue. It is recommended that you mow at least two days before and/or two days after.
According to the Tenacity product label for smaller applications, you will need to mix 1 tsp of Tenacity and 3 tsp of surfactant to 2 gallon of water, using 1 gallon each to cover 1,000 sq ft. Be sure to check the product label to ensure proper rates for your turf type and target weeds are being used to get the best results.
If you are planning to add any type of groundcover like mulch or pine straw, it is always best to put down your pre-emergent and water it in before applying the groundcover. In this situation, however, we would not recommend using Tenacity Herbicide next to or under desirable trees or ornamental plants. Per the product label, " Avoid over-spray or drift of spray applications onto ornamentals or flower beds and gardens. Roses and daylilies are sensitive plant species. Avoid applications over the top of exposed roots of trees and ornamentals." Our most popular pre-emergent herbicide for use around established ornamental plants is Snapshot.
Tenacity Herbicide and QuinKill Max have different active ingredients and different modes of action. QuinKill contains quinclorac, which is a post-emergent herbicide targeting primarily grassy weeds like crabgrass. Tenacity can be a pre-emergent or a post-emergent, depending on the application and the target weeds. There is a complete list of action on the product label. If you are overseeding with fescue, then you can apply Tenacity at or as close to seeding as possible, except for fine fescue seedings. Avoid applications to newly emerged seedlings until established (4 weeks or after the second mowing, whichever is longer). Please refer to the product label for complete application instructions.
If you are doing a full lawn renovation and wanting to kill existing plants before sodding, then we would recommend using a non-selective herbicide to clear the area before planting. You could use a product like RoundUp QuikPro for this application. Then after any existing plants have died and the lawn is prepared, you could put down your sod. We would suggest applying Tenacity after the sod is down as a pre-emergent (or post-emergent as needed) as long as the turf is one that is listed as tolerable on the product label. Keep in mind that the best time to use Tenacity for bentgrass will be in late Summer/early Fall.
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. If you are using Tenacity as a post-emergent herbicide, then it is generally best to spot treat since it can cause some temporary whitening of the desirable turfgrass. Another option that you may want to consider would be Dismiss Herbicide, which targets both sedges and many broadleaf weeds.
Tenacity Herbicide is not labeled to treat poa trivialis. Please provide your desired turfgrass for an alternate recommendation. Thank you!
It is not recommended to apply an insecticide within 7 days of applying Tenacity Herbicide.
Per the label of Tenacity Herbicide, this product can be applied at the same time of seed, except fine fescue. It is also recommended that you mow at least two days before and/or two days after.
Tenacity Herbicide is only labeled to suppress Poa Annua as pre-emergent. Tenacity Herbicide DOES NOT have any post emergent control when the poa is actively growing.
Tenacity Herbicide will not control moss. For moss in lawns we would recommend using the Lily Miller Moss Out in granules or liquid.
