Hi-Yield Atrazine Weed Killer - Questions & Answers

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  • Asked by Doug from Ky
    05/23/2023
    Q
    I live in Kentucky will Hi-Yield Atrazine Weed Killer work here?
    A

    Hi-Yield Atrazine Weed Killer is a product that can only be used on St. Augustine and Centipede grass. It will harm cool-season lawns or other grasses so depends on the type of turfgrass you have.

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  • Asked by Keith from New Iberia, La
    06/16/2023
    Q
    I have pampas grass full of Virginia creeper and Peppervine, can i use Atrazine to kill it?
    I don't want to kill the pompous grass
    A
    Hi-Yield Atrazine Weed Killer is only labeled to be used on St Augustine and Centipede turfgrass.  It should not be used in beds or around ornamental grasses.  Best option for broadleaf weeds in the area is handpulling or very carefully spot treating with a non selective herbicide avoiding any contact with desirable plants.
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  • Asked by Roger
    06/25/2023
    Q
    I planted Tifblair Centipede seed 6 weeks ago. Is this Atrazine safe to use now on the grass that has emerged?
    A

    Hi-Yield Atrazine Weed Killer is only safe on established lawns. Lawns are considered established once they been mowed 3 times.

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  • Asked by Rick from Monroe, Nc
    09/14/2023
    Q
    Does the pre emergence aspect of Atrazine affect the spreading or regrowth of the centipede stolons?
    A

    Yes, Hi-Yield Atrazine Weed Killer can inhibit seed growth of turfgrass, you cannot seed treated areas for at least 6 months after application.

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    0 of 1 people found this answer helpful.
  • Asked by Darwin from Oviedo
    11/08/2023
    Q
    Can Hi-Yield Atrazine Weed Killer be applied while grass is wet from dew?
    A

    Hi-Yield Atrazine Weed Killer is best applied to a dry lawn but a slight amount of dew is okay as long as not dripping wet.

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  • Asked by Jason from Atlanta Georgia
    12/12/2023
    Q
    Can I use this on dormant St Augustine grass to kill winter ryegrass?
    A

    While it is safe to apply Hi-Yield Atrazine Weed Killer to fully dormant St.Augustine grass, it is not labeled to control rye grass. Sertay Herbicide (Generic Certainty can be used to control perennial ryegrass.

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  • Asked by D. from Jacksonville, Fl
    01/26/2024
    Q
    Why can Atrazine only be used twice a year on St Augustine grass?
    A
    Hi-Yield Atrazine Weed Killer is only labeled to be used twice per year for actively growing listed weeds on St. Augustine and Centipede turf as directed due to the percentage of Atrazine and the sensitivity of St. Augustine and Centipede turf grass.
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  • Asked by Martin from Venice, La
    02/01/2024
    Q
    I am trying to kill crabgrass in my centipede lawn will Hi-Yield Atrazine Weed Killer kill it?
    A

    Hi-Yield Atrazine Weed Killer will suppress crabgrass, but it may not completely control it with one application, it can take multiple treatments. The best time to treat for post-emergent control is when the weeds are young and actively growing, usually when temperatures are between about 55 and 85 degrees. Please refer to the product label for a complete list of plants controlled and for full application directions. You will want to apply spring and fall pre-emergent herbicide applications to prevent many broadleaf and grassy weeds from germinating. Here is a great article on crabgrass treatment and prevention as well as one for centipede turf care.

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    1 of 1 people found this answer helpful.
  • Asked by Steve from Cape Coral
    03/01/2024
    Q
    If I mix Atrazine and distilled water will it store longer in my sprayer?
    Rather than tap water
    A

    Mixed Hi-Yield Atrazine Weed Killer should be used within a 24 hours of mixing with any type of water as it starts to break down after that time.  There is no ingredient in the product to hold it in solution longer.

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    2 of 2 people found this answer helpful.
  • Asked by Herbert from Sumter Sc
    03/20/2024
    Q
    When to seed bare areas with centipede seed after using Hi-Yield Atrazine Weed Killer
    After applying Atrazine to a lawn area that was overrun with weedsl That area is now bare. When can I reseed with centipede seed or lay down centipede sod. Could I do either if I first put down some top soil. Please advise me as to options. Thank you very much.
    A

    Per the product label Do not overseed turf areas within 6 months of treatment of Hi-Yield Atrazine Weed Killer.

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    0 of 1 people found this answer helpful.
  • Asked by Robert from Austin
    04/13/2024
    Q
    Will Hi-Yield Atrazine Weed Killer kill spear grass in St. Augustine?
    A

    Hi-Yield Atrazine Weed Killer is not labeled to control spear grass. Unfortunately there is not much information on how to control this grass. You may either consider spot treating with a non-selective such as Roundup QuikPRO - 5 x 1.5 oz. packs or double checking with your extension office to see if they know of anything else that may work 
     
     

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    1 of 1 people found this answer helpful.
  • Asked by Marjie from Pensacola, Fl
    05/30/2024
    Q
    Is Atrazine safe for ornamental plants and in flower beds?
    A

    Hi-Yield Atrazine Weed Killer should not be applied near, on or around ornamental plants and flower beds. It should only be applied as directed to actively growing weeds in established Centipede and St. Augustine lawns.

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  • Asked by Max from Anton. Texas
    06/29/2024
    Q
    Can you use Hi-Yield Atrazine Weed Killer around pecan trees?
    Henbit and goat head around pecan trees
    A

    Applications of Hi-Yield Atrazine Weed Killer would need to be kept outside of the dripline of any nut trees.  

    You could consider carefully spot treating the weeds with a product such as Avenger Weed Killer Concentrate, which  is a non-selective herbicide, made from the rind of oranges to control most annual grasses, weeds and broadleaf.  Be sure to avoid any contact with the trees themselves or exposed roots.

     

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  • Asked by Pedro from The Woodland, Tx
    08/02/2024
    Q
    Which is better spectracide weed stop for lawns with Atrazine or Weed Stop for lawns crabgrass killer?
    Which one of these is the best grab grass killer but will not harm my saint Augustine grass. Thank you
    A

    Hi-Yield Atrazine Weed Killer would be the product to use on St Augustine.  Spectracide Weed Stop for Lawns Plus Crabgrass Killer Concentrate states Do not apply to St Augustine on the product label.  It contains Quinclorac which St Augustine is not tolerable to.

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  • Asked by Anonymous from Baton Rouge Lousisana
    02/22/2025
    Q
    Do I need to use a Pre emergent after applying Atrazine to my lawn?
    A

    Pre emergents are applied before weeds have germinated. If the weeds are actively growing, you can  continue to treat with Atrazine                                                                                                               .

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Displaying 161 to 175 (of 175 questions)