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Diquat Water Weed and Landscape Herbicide - Questions & Answers

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Diquat Water Weed and Landscape Herbicide
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Displaying 21 to 40 (of 54 questions)
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  • Asked by John from Minneapolis, Mn
    02/25/2016
    Q
    What is the best option for a lake association to treat curly leaf pondweed on a 200 acre lake?
    A

    Diquat Water Weed and Landscape Herbicide would be a good option to use.

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    2 of 2 people found this answer helpful.
  • Asked by Brian from West Palm Beach, Fl
    05/09/2017
    Q
    Is Diquat ok to use around a single-family home landscape?
    I'm currently using Cornerstone, but some of the weeds just laugh at it and me. I'm mixing it to use with a pump-up hand held sprayer at almost double the recommended strength. Just trying to keep weeds out of flower beds mainly.
    A

    Diquat is a great herbicide and can be used in landscape areas in addition to its primary use of aquatic weeds in ponds/lakes, however you would need to be careful when you spray it as it would be a non selective and could harm the desirable plants around it. Using a pre emergent like Snapshot or Surflan in spring and fall to prevent weeds from coming up in landscaping and flower beds is the best option. For broadleaf weeds coming up in a flower bed you could use anything like Diquat or Roundup to spot treat, and for grassy weeds a product like Grass Out Max can actually be sprayed over the top of most flowers, ornamentals and vegetables to rid the areas of unwanted grasses. 

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    2 of 2 people found this answer helpful.
  • Asked by Don from Loami Illinois
    05/05/2021
    Q
    Will Diquat Water Weed and Landscape Herbicide kill grass around the pond we are spraying?
    A

    Diquat is a fast-acting aquatic & landscape herbicide that kills both weeds and grasses.  It will kill those sprayed.

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    2 of 2 people found this answer helpful.
  • Asked by Mike from Amarillo, Texas
    06/03/2014
    Q
    Best way to kill and control cattails/reeds and moss in reclaimed water in The Panhandle of Texas
    Hello, I have been nominated as the Chairman of the fishing committee. We have a beautiful slightly flowing river and large damned up areas that are becoming overgrown with reeds/cattails etc. the fish are very healthy however during the hot summer months I'm afraid these plants will ultimately overgrown or deoxygenate the water. Could I get some advice please? As always i on a budget. Thank you
    A

    Diquat Water Weed and Landscape Herbicide is one of our top products for control of Cattails as well as a multitude of other aquatic weeds. It is not harmful to any aquatic life and will control the weeds in the water as well as along the bank.

    For Cattails,

    Diquat Water Weed and Landscape Herbicide may be applied by backpack, airboat, spray handgun, helicopter, airplane, or similar application equipment that results in thorough spray coverage.
    Spot Treatment:
    Apply Diquat Water Weed and Landscape Herbicide at 2 quarts per 100 gallons spray carrier (0.5% solution) with an approved aquatic wetting agent at 0.25-1.0% v/v (1 quart to 1 gallon per 100 gallons water). For cattail control, Diquat Water Weed and Landscape Herbicide should be applied prior to flowering at the maximum application rate (8 quarts of Diquat Water Weed and Landscape Herbicide/100 gallons spray carrier) plus the wetting agent. Repeat treatments may be necessary for complete control. Spray to completely wet target weeds but not to runoff. Densely packed weeds or mats may require additional
    applications due to incomplete spray coverage. Re-treat as needed. For best results, re-treat weed escapes within 2 weeks of the initial treatment.
    Broadcast Treatment:
    Apply Diquat Water Weed and Landscape Herbicide at the rate of 0.5-2.0 gallons per
    surface acre in sufficient carrier along with 16-32 oz./A of an approved wetting agent. Retreat as necessary for densely populated weed areas. Good coverage is necessary for control of the target weeds. For duckweed control, apply Diquat Water Weed and Landscape Herbicide at 1-2 gallons/A
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    2 of 3 people found this answer helpful.
  • Asked by Ken from Woodinville, Wa
    04/30/2014
    Q
    Which products will kill Horsetail?
    A
    Diquat Water Weed and Landscape Herbicide will kill horsetail. Horsetail is very hard to control and it can be tough to properly penetrate through the plant. When using the Diquat you will need to mix it at the rate of 2-4oz per gallon of water and mix it with an 80% Non ionic surfactant.
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    2 of 2 people found this answer helpful.
  • Asked by Mark from Downers Grove Il.
    04/16/2013
    Q
    What would be the best product to control tall grass in a natural pond about 1/4 acre?
    Part of the pond is fine with the grass but it's taken over the whole circumference and I'd like to control, reduce 1/2 of it, what would be the best product considering it being in water not to affect the aquatic and bird life?
    A
    Diquat Water Weed and Landscape Herbicide would be a great choice for you. Diquat controls weeds by interfering with photosynthesis, which results in rapid visible effects in only a few days.  Best of all it has a full aquatic label and is not harmful to aquatic animals.
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    2 of 5 people found this answer helpful.
  • Asked by Terry from Gadsden
    04/02/2020
    Q
    Is Diquat Water Weed and Landscape Herbicide fish safe?
    Is this product save to use in ponds that have fish in but you want to kill water lillies
    A

    Diquat Water Weed and Landscape Herbicide is safe for ponds with fish when used as directed on the product label. Per the product label: "Treatment of dense weed areas may result in oxygen loss from decomposition of dead weeds. This loss of oxygen may cause fish suffocation. Therefore, treat only 1/3 to 1/2 of the water body area at one time and wait 14 days between treatments." We do not carry an algaecide or any other products that are safe to be used in specifically koi ponds at this time.

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    1 of 1 people found this answer helpful.
  • Asked by Emmette from Summit, Mississippi
    04/05/2017
    Q
    What is the rate per gallon of Diquat Water Weed and Landscape Herbicide to kill pennyworts in pond?
    A

    Per the product label Diquat Water Weed and Landscape Herbicide can be used at a rate of .5-2.0 gallons per surface acre in a sufficient carrier along with 16-32 oz per acre of a surfactant for pennywort. Retreat as necessary for densely populated weed areas. If you are using it as a spot treatment, you would use approximately .75 oz per gallon of water plus a surfactant. Spray to completely wet target weeds but not to the point of runoff. Densely packed weeds or mats may require additional applications due to incomplete spray coverage. Repeat as needed. For best results, re-treat weed scapes within 2 weeks of the initial treatment. 

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    1 of 1 people found this answer helpful.
  • Asked by Warren from Hemphill, Tx
    01/29/2020
    Q
    What is the mix rate for Diquat?
    A

    Diquat Water Weed and Landscape Herbicide should be applied at a rate of 1 to 2 gallons per surface area of water. For a 1 acre lake or pond - spray 1 to 2 gallons of Diquat into the lake. If using a hand sprayer, for example, 2 gallon sprayer, put 1 gallon of water and 1 gallon of Diquat into the sprayer and spray the contents over an acre of the area. Per the product label, it should be applied in the spring or early summer when the weeds are actively growing  and when water temperatures have reached or exceeded 50 degrees.Please see the label for complete application instructions.

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    1 of 3 people found this answer helpful.
  • Asked by Ryan from Evansville, In
    06/22/2019
    Q
    Will Diquat work for treating a specific amount of shoreline in a large lake?
    I have about 1/2 acre of area to treat around my shoreline in a 50 acre lake. Will this product work for submerged, rooted weeds? If so, how much do you recommend and how to apply?
    A

    Diquat Water Weed and Landscape Herbicide should be applied at a rate of 1 to 2 gallons per surface area of water. For a 1 acre lake or pond - spray 1 to 2 gallons of Diquat into the lake. If using a hand sprayer, for example, 2 gallon sprayer, put 1 gallon of water and 1 gallon of Diquat into the sprayer and spray the contents over an acre of the area. Per the product label, it should be applied in the spring or early summer when the weeds are actively growing  and when water temperatures have reached or exceeded 50 degrees.

     

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    1 of 1 people found this answer helpful.
  • Asked by Jennifer from Whigham, Ga
    06/19/2019
    Q
    Is Diquat Water Weed and Landscape Herbicide rainproof?
    A

    Diquat Water Weed and Landscape Herbicide is considered rainfast after the treated area has dried. 

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    1 of 1 people found this answer helpful.
  • Asked by Chris from Hickory, Nc
    08/21/2018
    Q
    What can be used to get rid of water willow in a lake?
    A

    We suggest using Diquat Water Weed and Landscape Herbicide for water willow.  Please see the product label for specific rates and application instructions.  

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    1 of 1 people found this answer helpful.
  • Asked by Donald from Otsego Mi.
    07/19/2018
    Q
    Can I use a back pump up spayer to kill duckweed that has took over my 1.5 acre pond? What is the mix rate of Diquat Water Weed and Landscape Herbicide?
    A

     

    You want to use .75 fl ounces of Diquat Water Weed and Landscape Herbicide per one gallon of water to spot treat for duckweed. Be sure to mix in a surfactant like Non Ionic Surfactant, to help the product to stick. 

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    1 of 1 people found this answer helpful.
  • Asked by Michael from Orlando
    10/10/2022
    Q
    How long do I have to wait to sod after spraying my lawn with Diquat Water Weed and Landscape Herbicide?
    A

    We recommend waiting about 2 weeks after applying Diquat Water Weed and Landscape Herbicide so that the treated plants have time to die before you prepare the soil for seeding 

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    1 of 1 people found this answer helpful.
  • Asked by Linda from Cleveland, Tx
    05/05/2018
    Q
    Can Crystal Blue Pond Cleaner be used along with Diquat Water Weed & Landscape Herbicide?
    Trying to kill duckweed and pond scum or muck. Is there a product that does both?
    A

    Diquat Water Weed and Landscape Herbicide should be applied first and then the Crystal Blue Pond Cleaner to clear dead vegetation and muck/scum. We are not aware of a product that contains bond cleaner and weed eradication.

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    1 of 3 people found this answer helpful.
  • Asked by Tom from Desoto, Mo
    01/29/2018
    Q
    Will Diquat Water Weed and Landscape Herbicide harm koi fish? Can I pour it in the pond for suspending algae?
    What is the best way to get rid of cattails and keep them from coming back? Can I use this as a pre- emergent?
    A

    We do not carry an algaecide or any other products that are safe to be used in koi ponds at this time. We would recommend that you contact a koi pond supplier in your area or possibly your local cooperative extension office for advice on what products to use.

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    1 of 3 people found this answer helpful.
  • Asked by Patrick from Mobile, Al
    05/25/2017
    Q
    Will Diquat Herbicide kill eurasian milfoil in a river?
    A

    Yes, Diquat Water Weed and Landscape Herbicide is labeled for Eurasian Milfoil.   For best results, re-treat as necessary on 14-21 day intervals.

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    1 of 1 people found this answer helpful.
  • Asked by Marston from Stonewall, Ok
    05/11/2016
    Q
    How do I apply Diquat Water Weed and Landscape Herbicide for Coontail?
    Would like advice on Diquat and Coontail in Farm Pond. Fairly heavy infestation. About a acre at 4ft depth. Surfactant needed? Amount per gallon of Diquat? Application method? Using ATV 15 gallon sprayer with wand. Also is it hard on grasses in area near spraying? Some wind drift.
    A

    Diquat Water Weed and Landscape Herbicide should be used with a surfactant, such as the Non-Ionic Surfactant. The ratio for that product is 1-2 teaspoons per gallon of water. The Diquat can be used as as a broadcast application or a spot spray. It is labeled for various broadleaf weed and could potentially kill them if the product drifts.

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    1 of 4 people found this answer helpful.
  • Asked by C. from Grand Rapids, Mi
    09/11/2021
    Q
    Using Diquat to eradicate duckweed
    Do I have to remove my lotus and lily plants or is it enough to just be careful not to get it on them?
    A

    Diquat Water Weed and Landscape Herbicide will kill both duckweed and lily plants. You would need to spot treat the duckweed carefully, avoiding the lotus and lily plants. Removing them, if you can, would be the best option to avoid injury. 

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  • Asked by Nancy from Sanford Nc
    07/01/2021
    Q
    Can you put the Diquat directly into a small pond with a lot of weeds in the water?
    A

    Diquat Water Weed and Landscape Herbicide should be tank mixed with water and a non-ionic surfactant and sprayed into the pond as a broadcast application (for widespread weeds) or a spot spray (for sporadic weeds).   Please refer to the product label for complete instructions.

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Displaying 21 to 40 (of 54 questions)