According to the manufacturer, it is not advised to apply more than the recommended amount of the non-ionic surfactant. We advise you to use the ratio recommended on the product label.
The amount of Tenacity Herbicide that is used is based on the amount of area you are treating. With herbicides, the amount of water is not as important as the amount of water that is being used. The rate we would recommend using is 5 fl oz to cover an acre. This can be mixed in 25-30 gallons of water to cover an acre.
Since quackgrass is not on the label to be controlled by the Tenacity, we cannot recommend you use it for this application. We do, however, carry Certainty, which is a selective post-emergent herbicide like Tenacity, that does have Quackgrass listed on the label under weeds controlled. You can see the dilutions and what grasses are tolerant of Certainty on the product label.
Yes, Tenacity can be applied in the summer. Keep in mind that the best temperature range to apply most herbicides, including Tenacity, is between 65-85 degrees.
No, Tenacity Herbicide is not labeled for Horse's Tail (Equisetum arvense), so we would not recommend using this product for it.
No, Tenacity Herbicide will not kill or eliminate orchard grass, quackgrass or tall fescue.
When using Tenacity Herbicide, the amount of water is not what is important; the right amount of product is. The rate for 1000 square feet is 1 teaspoon. The will mix in 1-2 gallons of water. Please let me know how much area you are treating to give you the best rate.
The rate of the surfactant is 1-2 teaspoons per gallon of water. For 26 gallons of water, the rate of surfactant is 26-52 fl oz.
Tenacity Herbicide will harm Bermuda lawns. Please contact us at 866-581-7378 M-F 9-5PM EST for an alternative product selection that will best fit your needs. Thank you!
You did not mention which surfactant you are planning to use with the Tenacity. The one that is most commonly recommended is the Southern Ag Non-Ionic Surfactant for Herbicides, which requires 1-2 teaspoons per gallon of water.
Tenacity Herbicide will not kill lawn fungus. It is a herbicide that will only eradicate listed weeds in listed turfgrass only. We do offer fungicides for the lawn.
Tenacity Herbicide can be applied any time before the weeds start to germinate. Weeds absorb Tenacity as they emerge from the soil. For the best time to apply pre-emergents in your county we recommend contacting your local cooperative extension office here. Crabgrass seeds will start to germinate when soil temperature are around 55 degrees, so you need to apply it before you have those temperatures for best results.
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 see no reason why you cannot apply Weed Be Gone now. It has been 3 weeks after Tenacity Herbicide, which is plenty of time. Please take a look at the Tenacity product label to be sure that it is safe to apply to your particular grass species.
Tenacity Herbicide is only safe to use on dormant Bermudagrass, and it will not offer post-emergent control of poa annua, per the product label. A better choice to control existing poa annua in bermudagrass would be Monument 75WG Herbicide. Be sure to use a non-ionic surfactant with Monument as well. We also recommend using a pre-emergent herbicide such as Dimension 2EW or Prodiamine 65 WDG in late Summer/early Fall for the best control of annual bluegrass. Please see our Poa Annua Lawn Care Guide for more tips and information.
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.
Per the label of Tenacity Herbicide, the lawn can be reseeded at any time unless the grass type is fine fescue. You will not need to remove the dead weeds from the area first.
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.
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 can be used as both a spot treatment in your lawn or as a broadcast spray. It can be applied with any hand pump sprayer. Many of our customers like the Chapin Premier 1-Gallon Sprayer.
Tenacity Herbicide is not restricted in the state of New York. It can be applied when the soil temperature reaches 55 degrees Fahrenheit. This should be broadcast across the lawn in areas where you are wanting to prevent weeds. Be sure to water the product in 0.5 inches to activate it. This product can be applied right before it is going to rain. We normally recommend applying Tenacity in early to mid April in cool season areas.
Please check out our Cool Season Lawn Guide for tips on how and when to use products in your lawn.
