Tenacity Herbicide is not labeled to control Poa Annua/Annual Bluegrass in a post emergent application, it only states that it could cause injury to it if sprayed. Kentucky bluegrass and ryegrass are tolerable to it so would not be harmed. It is only labeled to be used for suppression of poa annua when used as a pre-emergent. Unfortantely there is not a post emergent product that would remove it and not harm the KGB as they are too similar. We recommend that you spot treat the poa annua using a non-selective herbicide such as GlyPhoSel Pro. Your best option for poa annua is to use a pre-emergent herbicide more suited to preventing it like the Prodiamine 65 WDG.
Tenacity Herbicide is a pre and post emergant so it can be applied at any time of the year, where the weeds and grasses you are treating are still actively growing with temps consistently above 55 degrees. Per the product label you would use .5 tsp of tenacity in one gallon of water.
Tenacity will be most effective when temperatures are around 55 degrees. A non-ionic surfactant should be added in post-emergence applications.
It would be best to wait to apply Tenacity Herbicide once they have dried. Be sure to mix in a surfactant like NonIonic Surfactant.
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 should be applied with a non-ionic surfactant to achieve the best results. Please refer to the product label instructions for details on mixing and application.
Yes, you can use Tenacity Herbicide at the same time as a fertilizer such as humic acid either as a pre or a post emergent provided you use both at the correct usage rates per the labels.
It is safe to mow areas that have been treated with Tenacity Herbicide 2 days after application. After that time the product would have worked into the plant enough to not be affected by mowing. Delaying mowing does not help it work better.
It is not required to rake after Tenacity Herbicide application. However, if you are reseeding or anything of that nature it would be best to rake.
For best results, do not apply Tenacity Herbicide when rainfall is forecasted to occur within 48 hours.
Tenacity Herbicide is labeled to control ground ivy aka creeping charlie as a post emergent only, it may take a few applications to completely kill it.
Foliage of treated weeds cease growth after application, then turn white (loss of chlorophyll) and death may take up to three weeks. A repeat application of Tenacity Herbicide is required after two to three weeks for improved postemergence weed control.
Tenacity Herbicide should be used when the temperatures are 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.
Tenacity Herbicide should be applied in temperatures above 55 but below 80 degrees.
Foliage of treated weeds cease growth after application of Tenacity Herbicide, then turn white (loss of chlorophyll) and death may take up to three weeks. So, sometime within 3 weeks.
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.