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Barricade 4FL Pre-Emergent Herbicide (Prodiamine) - Questions & Answers

Learn more about Barricade 4FL Pre-Emergent Herbicide (Prodiamine)

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Barricade 4FL Pre-Emergent Herbicide (Prodiamine)
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Displaying 21 to 40 (of 67 questions)
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  • Asked by Terry from Norman, K
    01/24/2024
    Q
    Can Barricade 4FL Pre-Emergent Herbicide be applied after a light rain?
    A

    When applying a product like Barricade 4FL Pre-Emergent Herbicide (Prodiamine) you should inspect the lawn and see if the soil is still saturated or not. Sometimes an inch of rain is absorbed well into the soil, and other times the soil may already have a lot of moisture and that could cause runoff and uneven weed control. If it was only a light rain and the soil is not saturated it should still be okay to apply.   You do need to be sure to water in with irrigation or rainfall after application as directed on the label
     

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    2 of 2 people found this answer helpful.
  • Asked by Thom
    03/08/2024
    Q
    How soon after applying Barricade 4FL Pre-Emergent Herbicide should it be watered in?
    I'm hoping to apply the day before a rain. Is this okay? It'll likely dry then get watered in.
    A

    Ideally watering in is done right after application of Barricade 4FL Pre-Emergent Herbicide but can be within 7 days of application. Timing your treatment with the rainfall is the best way to go as long as not too much!  It only needs to be watered in ½ inch.

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    2 of 2 people found this answer helpful.
  • Asked by Mitch from Memphis, Tn
    12/29/2021
    Q
    Will Barricade 4FL Pre-Emergent Herbicide work well in a quart-size, hose-end sprayer?
    A

    Barricade 4FL Pre-Emergent Herbicide (Prodiamine) should be used in a tank sprayer for best results. Herbicides are much different than other chemicals because water just acts as the carrier. I The rate is not provided per gallon of water but per area so would not work well in a hose end.  Please read the product label to determine the exact usage rate for your needs as it varies according to the species of grass you have.  We have a video here that can help explain how to calibrate your sprayer.

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    2 of 4 people found this answer helpful.
  • Asked by Sam
    12/27/2021
    Q
    Can Barricade 4FL Pre-Emergent Herbicide (Prodiamine) be used on centipede grass?
    A

    Yes, Barricade 4FL Pre-Emergent Herbicide is labeled for use on established centipede turfgrass as directed. Please refer to the product label for full application instructions here.

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    2 of 2 people found this answer helpful.
  • Asked by Shoua from Bear Creek
    03/30/2024
    Q
    I'm planting dahlias, can I use Barricade 4FL Pre-Emergent Herbicide after?
    Hi, in a flower farmer, after I plant my dahlias can I use this pre emergent over the rows will it protect the dahlias bulbs and allow them to grow?
    A

    Barricade 4FL can be applied to newly transplanted plants or established plants as directed on the label.  

    Apply before or after bulbs emerge but before bulbs bloom and weeds emerge
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    2 of 2 people found this answer helpful.
  • Asked by Rupam from New Hill, Nc
    02/04/2024
    Q
    Applying Fertilizer after Barricade 4FL
    After applying Barricade 4FL in Feb , can I apply fertilizers to bermuda grass in Spring (Mar - Apr). If no then what is the waiting period . I usually do scotts turf feed , is that compatible with Barricade 4FL
    A

    Yes, once you apply Barricade 4FL Pre-Emergent Herbicide (Prodiamine) in February, you can apply fertilizer at or around the same time. The only time we don't recommend applying a fertilizer is if it already contains a pre-emergent. If it is only a fertilizer, you can apply it at any time. 

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    1 of 1 people found this answer helpful.
  • Asked by Richard from Ogden Utah
    03/25/2024
    Q
    How long after I apply Barricade 4FL can I put down some fertilizer?
    A

    You can typically apply a pre emergent such as Barricade 4FL Pre-Emergent Herbicide (Prodiamine) the same day or the following day as a fertilizer application as long as they do not have competing use instructions regarding watering in after treatment and they do not contain the same active ingredient as a pre-emergent.
     

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    1 of 1 people found this answer helpful.
  • Asked by Elsbeth from Renton Wa
    03/25/2024
    Q
    I have been using Barricade 4FL for several years on gravel, beautibark etc for several years.
    I have been using Barricade 4FL for several years, but I use it only on Bark, gravel etc. I was told to use 3oz per gallon. Is that the amount I need to use or can I use less?
    A

    You will need to use 0.5 – 1.1 oz of Barricade 4FL per 1,000 sq. ft. for ornamental type areas, the amount of water you will need depends on the amount of water it takes to irrigate that area. If you're unsure, you will need to calibrate your sprayer. Please read the product label for complete application instructions. 

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    1 of 3 people found this answer helpful.
  • Asked by Don from St Petersburg, Fl
    08/11/2022
    Q
    Can it be used on St Augustine grass in Florida
    A
    Barricade 4FL is labeled to apply on St. Augustine. Please read the product label for specific application instructions.
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    1 of 1 people found this answer helpful.
  • Asked by Don from Clovis Californ
    02/12/2023
    Q
    Does Barricade 4FL kill normal grass on application?
    Well it kill regular grass or just the weeeds
    A

    Barricade 4FL Pre-Emergent Herbicide does not kill weeds or grasses. It will only keep the weeds listed  on the label from germinating and is safe for the listed turfgrasses. Please see the label for a full list of targeted weeds and full application instructions. 

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  • Asked by J from Harrisburg, Nc
    03/01/2025
    Q
    I put Barricade 4FL Pre-Emergent Herbicide (Prodiamine) down but we did not get the rain I thought we would. It’s now 14 days since. What do I do now?
    A

    After sufficient water at the time of Barricade 4FL Pre-Emergent application, you will water now if no rainfall is expected/no irrigation to the area.

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  • Asked by Melissa from Dunnellon, Fl
    02/13/2025
    Q
    Can you reapply after a week or more? And what time of day is preferred to apply? Ocala, FL area.
    A
     Barricade 4FL Herbicide can be applied once or twice per year as long as you don't go over the 1.1 ounces per 1000 sq. ft per year(21 oz per acre/per year) for Turf Type Tall Fescue.
     
    Please review the charts of page 12 & 12 of the product label for more information. 
     
    The general rule for spring is to apply your pre-emergent herbicide treatment such as Barricade 4FL Pre-Emergent Herbicide (Prodiamine) after the ground has thawed from the winter but before the temperature of your soil reaches 55 and 65 degrees. You can use a soil thermometer to determine the temperature of your lawn/area. You will want to measure the temperature of the soil a few inches below ground.
     
    The ideal time to apply a fall pre-emergent herbicide to your yard is between August and November when the soil temperature is below 70 degrees and dropping.
     
    You may can also contact your local cooperative extension office to determine the correct timing of the application as this will vary greatly from region to region or search online for best time to apply in (your area). A lot of universities have great articles for this.
     
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  • Asked by Jason from La Jolla
    09/02/2024
    Q
    Barricade then topper and new seed
    If i put down Barricade along with a kill all then removed the dead grass/ weeds then two weeks later add topper and new seed will the seed grow?
    A

    You should not apply Barricade 4FL Pre-Emergent Herbicide (Prodiamine), or any pre-emergent, if you are planning to seed within the same season.  Also applying a top layer of soil over a pre-emergent application would be above the barrier it creates so will not offer full protection.  You should apply any top layer of soil before applying a pre-emergent for the best barrier to prevent weeds..

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  • Asked by Paul from Mills River Nc
    01/11/2023
    Q
    Barricade 4FL Pre-Emergent Herbicide use with wild flower bed
    Is Barricade specific enough to weed control that it can be used in wild flower beds and still have wild flowers grow and bloom?
    A

    Barricade 4FL Pre-Emergent Herbicide (Prodiamine) is labeled safe for some ornamentals but should only be used around established wildflowers as it could inhibit seed growth. We would suggest you check the label prior to an application to ensure your flowers are the tolerable list.
     
     

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  • Asked by Skip from Ga
    02/02/2023
    Q
    Can I use Barricade 4FL Pre-Emergent Herbicide (Prodiamine) on creeping blue juniper?
    A

    Yes, Barricade 4FL Pre-Emergent Herbicide can be applied to creeping juniper and other listed varieties of juniper as directed.

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  • Asked by Jose from Naples, Fl
    02/08/2023
    Q
    Does Barricade 4FL help prevent Bermuda grass growing on St. Augustine grass?
    A

    Barricade 4L would not prevent bermuda nor any other turfgrass from growing in a St Augustine grass lawn and there is product that will.


     
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  • Asked by Helen from Roseville, Ca
    03/11/2024
    Q
    Animal safety with Barricade 4FL Pre-Emergent Herbicide
    My neighbor has goats that graze between the fence rails. Will this product be harmful if a goat eats a week with this on it?
    A
    Barricade 4FL Pre-Emergent Herbicide would not be recommended to use in assigned pastures or grazeland where animals are intended to graze or in specifically planted food plot areas.   Prowl H2O would be an alternative pre-emergent for the area.
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  • Asked by J from Stedman, Nc
    02/26/2023
    Q
    Can Barricade 4FLbe mixed with Drive XLR8?
    I want to use both to use to prevent crabgrass and kill pre existing weeds that have already emerged
    A

    Yes, you can mix Barricade and Drive XLR8 together following the instructions on each product label for rates and tank mixing.

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  • Asked by Holmes from Detroit, Mi
    03/07/2023
    Q
    Can I use Barricade 4FL after a fall over seed?
    I did a fall over seed with KGB. While most of the grass came in I still have some spots I will have to put seed down once it gets warmer. Will using this inhibit seed growth or does it work like Tenacity?
    A

    Barricade 4FL Pre-Emergent Herbicide (Prodiamine) can be put down in the spring if you overseed in the fall. It is not like Tenacity that can be applied at the same time/close to seeding, with Barricade it states to wait at least 60 days after seeding to apply so the grass is established

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  • Asked by David
    10/08/2023
    Q
    For Tall Fescue, will applying Barricade 4FL Pre-Emergent Herbicide (Prodiamine) at the 0.5 fl oz per 1000 sq ft rate give me the 4-5 month pre emergent control of listed weeds?
    If I use 0.50 per 1000 sq feet Would this give me the 4 - 5 month preemergent control? 1. tank sprayer 2. per 1000 sq ft 3. Tall Fescue I'm reviewing the charts on pages 12 & 13 chart page 12 I see 21 for Tall Fescue Chart page 13 I see 0.5 - 1.1
    A

     Barricade 4FL Herbicide can be applied once or twice per year as long as you don't go over the 1.1 ounces per 1000 sq. ft per year(21 oz per acre/per year) for Turf Type Tall Fescue. 

    Doing a split application 60-90 days following the 1st application will give you longer residual control as opposed to a single application. We would recommend doing a second application at the 0.5 oz rate per 1000 sq ft to get the longer monthly residual.

    Please review the charts of page 12 & 12 of the product label for more information. 

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    0 of 1 people found this answer helpful.
Displaying 21 to 40 (of 67 questions)