Certainty Herbicide - 1.25 oz. - Questions & Answers

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  • Asked by Dean from Iowa
    05/02/2013
    Q
    Controlling quackgrass in Kentucky Bluegrass
    The Michigan State University extension website says "If your lawn is primarily Kentucky bluegrass, there is a selective herbicide that will remove the quackgrass without killing the rest of your lawn. This product is only available to professional lawn care operators, and they need to make two applications on a 14-day interval. The name of the product is Certainty." However, your Q&A section includes an answer that says Certainty is not "labeled for use on Kentucky Bluegrass." Can you clarify the apparent disconnect?
    A
    Since we do not make this product we have to go by what the manufacturer supplies us with. Kentucky Bluegrass is not on the label so we have to assume it cannot be used on that type of grass. However, here is Monsanto's telephone number 800-332-3111. We recommend contacting Monsanto and speaking with the customer service agent there to verify if this product is safe for kentucky Bluegrass.
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    19 of 24 people found this answer helpful.
  • Asked by Jesse from Des Moines, Ia
    03/16/2012
    Q
    Quackgrass - Is Q4 effective at killing quackgrass?
    Are there any chemicals available through your company that can eradicate quackgrass?
    A
    Quackgrass is a grassy weed, so you need a product labeled for grassy weeds.  Certainty is our most popular product for quackgrass and other grassy weeds.
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    17 of 20 people found this answer helpful.
  • Asked by Pete
    05/12/2011
    Q
    How soon can I re-seed after application of Certainty?
    Live in MA. Have a predominantly KBG lawn, with some tall fescue creeping in places that I would like to get rid of. After application, how soon can I re-seed any bare spots or over-seed the whole lawn? Thanks!
    A
    According to the product label, you should wait at least 3 weeks before re-seeding or over-seeding with Certainty.
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    14 of 19 people found this answer helpful.
  • Asked by Michael
    06/25/2010
    Q
    I am applying Certainty Herbicides and the instructions indicate I need Non-ionic surfactant. What would be an example of that?
    I will be applying this to my bluegrass lawn.
    A
    We offer DyneAmic Surfactant on our website. DyneAmic is a high quality non-ionic surfactant that greatly enhances the effectiveness of Certainty and other herbicides and fungicides on lawns, ornamentals, trees and landscape areas. The surfactant helps penetrate the natural waxy tissue of plants.
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    13 of 16 people found this answer helpful.
  • Asked by Brian from Marysville, Oh
    04/19/2012
    Q
    How do I kill tall fescue in a KBG lawn?
    I thought I was going to be able to use Certainty to kill the tall fescue in my KBG lawn until I read the note on the label change after 2011. What is the right product to use now?
    A
    We do not carry a product that will take fescue out of kentucky blue grass.  Unfortunately they are so closely related that you cannot selectively remove it with any product that we are aware of.  Your best option in this scenario is to kill the fescue with a Ranger Pro (glyphosate) product and then re-seed with your KBG.
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    10 of 13 people found this answer helpful.
  • Asked by George from Hardeeville, Sc
    06/03/2013
    Q
    How many sq. ft. does a 1.25 oz. bottle of Certainty herbicide cover? .
    I am trying to get rid of kyllinga weeds in my centipede lawn and need to know how much coverage I will get with this 1.5 oz bottle of Certainty herbicide.
    A
    One bottle can treat from 10,000 square feet to over 35,000 square feet depending on the weed and grass you are treating. For the selective control of Kyllinga use 1.25 ounces per acre on Centipede lawns. The amount of water you use will vary as the water acts as the carrier. On average with herbicides you will use 2-3 gallons of water per 1000 sq/ft to give sufficient coverage.
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    7 of 8 people found this answer helpful.
  • Asked by Anne from Ham Lake, Mn
    09/27/2015
    Q
    How long after application of Certainty does it take for poa trivialis to die?
    We applied Certainty to our entire yard yesterday to kill off the poa trivialis. What typically happens, does it turn a color as it is dying?
    A

    You may notice signs of the poa trivialis dying (discoloration-yellowing or browning) within 2-3 weeks after you have applied Certainty but it is normal not to see anything for at least a month. Per the product label, you can make an additional application 4 or more weeks after the initial application as needed. Best results are obtained when target weeds are actively growing & not disturbed by mowing for at least 2 days before and 2 days after application. Warm, moist conditions following application will accelerate activity; cold, dry conditions will delay activity. Drought stressed weeds are less susceptible.

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    7 of 7 people found this answer helpful.
  • Asked by Bill from Marietta, Ga
    11/18/2013
    Q
    This product says it will kill poa annua. Is it safe for bermuda lawns?
    The HALTS I put down twice did nothing to control poa annua. I want to kill it before it takes over the lawn like last winter.
    A
    Certainty has been shown to be safe on Bermuda grasses.
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    7 of 11 people found this answer helpful.
  • Asked by Bob from Elkhorn
    10/13/2015
    Q
    Will Certainty kill tall fescue?
    A

    Yes, Certainty is labeled to target Tall Fescue applying at a rate of 3 - 5 small scoops or 1 - 2 large scoops per gallon of water per 1,000 sq ft.

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    6 of 6 people found this answer helpful.
  • Asked by Mike from Mccalla, Al
    10/17/2016
    Q
    How do I dilute Certainty Herbicide to treat dallisgrass?
    Or could you tell me How many gallons of water with one bottle of Certainty mix for? Spraying for Dallisgrass in the fall.
    A

    Per the Certainty Herbicide product label for dallisgrass suppression, you would use 1.25 oz per acre.  This would be mixed in 10-50 gallons per acre. The amount of water you use will vary as the water acts as the carrier.  For smaller areas, you would use 5 small (or 1 large) scoop per 2 gallons of water to cover 1000 sq ft.  At this rate one bottle will cover one acre.  Please refer to the product label for complete instructions for treatment and tank mixing recommendations.

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    6 of 6 people found this answer helpful.
  • Asked by Gwen from Oklahoma City, Ok
    08/27/2014
    Q
    Does rain affect the spray for nutsedge with Certainty Herbicide?
    How long does it need to be sprayed before a rain comes?
    A
    Per the product label: Heavy rainfall or irrigation within 2 hours after application may wash this product off the foliage and a repeate application may be required for adequate control.
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    6 of 8 people found this answer helpful.
  • Asked by Earl
    02/01/2012
    Q
    What do you have to get rid of Poa Annua and nutsedge?
    A
    Poa Annua is actually annual bluegrass, a type of grassy weed.  Certainty is our most popular product for Poa Annua and Nutsedge control.
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    6 of 10 people found this answer helpful.
  • Asked by Carl from Georgia
    03/24/2016
    Q
    What is the Certainty mixing instructions per 1 gallon or 2 gallon of water?
    Most of the mixing instructions you have provided to customers here say X number of small or large scoops per gallon. When clearly the directions state per 2 gallons vol of water. Please explain. I don't want to be putting the product out too week of course :)
    A

    The small scoop for Certainty is .16grams and the large .8grams. Depending on what you are treating for and what type of turf you are treating for would make the difference in how many scoops you would use per gallon water. On page 2 of the Product label you will find the mix chart. 

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    6 of 14 people found this answer helpful.
  • Asked by Don from Chicago
    07/15/2014
    Q
    What is the shelf life of Certainty?
    A
    Certainty Herbicide if store in a cool dry area will last for 3 years.
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    6 of 6 people found this answer helpful.
  • Asked by Garry from Lumberton, N.c_
    04/23/2012
    Q
    My zeon zoysia lawn (sodded last summer) is being taken over by water grass
    A
    Certainty is a selective herbicide that kills many grassy weeds which water grass is a generic term for, in warm season grasses like zoysia.  It will kill the grassy weeds and not the zoysia grass.
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    5 of 6 people found this answer helpful.
  • Asked by Allan from Ithaca,new York
    06/08/2015
    Q
    How long do I have to keep my dog off the lawn after spraying Certainty?
    A
    Your dog can be allowed on the lawn once the Certainty Herbicide has thoroughly dried.
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    5 of 5 people found this answer helpful.
  • Asked by Larry from Avon Indiana
    01/17/2012
    Q
    Does Certainty kill Kentucky blue grass?
    Will it kill grassy weeds withot harming KBG?
    A
    Certainty is not labeled for use on Kentucky Bluegrass. We do carry several herbicides such as SpeedZone Lawn Weed Killer Concentrate and Tenacity Herbicide which are labeled for use on Kentucky bluegrass. We strongly recommend that you read over the product label of the product you choose (product label link will be under the picture of the product on each individual product page) to make sure you can use the product on Kentucky Bluegrass and to make sure the weeds you are trying to eliminate are listed. You can search Kentucky Bluegrass on our online store to see other products that may meet your needs.
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    5 of 6 people found this answer helpful.
  • Asked by Chris from Dallas,tx
    03/07/2017
    Q
    Will Certainty Herbicide kill poa annua and rescuegrass?
    A

    Yes, Certainty Herbicide is labeled to control both rescuegrass and poa annua. 

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    5 of 6 people found this answer helpful.
  • Asked by Andrew from Arkansas
    04/30/2014
    Q
    Can certainty be sprayed in spring when bermuda grass is starting to come out of dormancy
    And also can it be sprayed all year around?
    A
    Yes, you can apply Certainty Herbicide in the spring once Bermuda grass is coming out of dormacy. However, you must be sure that there has been 3 consecutive days with soil temperatures of atleast 55 degrees to ensure that the Certainty Herbicide will be effective.
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    5 of 5 people found this answer helpful.
  • Asked by Barry from Ga
    08/27/2013
    Q
    How much Certainty do I need to spot spray weeds including nut grass?
    A

    The amount of Certainty will depend on what type of turfgrass you will be applying the product to and the amount of water you use will vary as the water acts as the carrier. On average with herbicides you will use 2-3 gallons of water per 1000 sq/ft to give sufficient coverage. Please click on the product label link for specific mixing and application instructions.

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    5 of 7 people found this answer helpful.
Displaying 1 to 20 (of 112 questions)