Q4 Plus Broadleaf Weed Herbicide (Controls Nutsedge, Foxtail, Crabgrass) - 1 Gallon

PBI Gordons Corp

$171.99

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Q4 Turf Herbicide for Grassy & Broadleaf weeds

Q4 Plus Turf Herbicide is a patented product containing four active ingredients, Quinclorac, Sulfentrazone, 2,4-D, and Dicamba, for control of a broad spectrum of both grassy and broadleaf weeds through multiple modes of action in established cool-season and bermudagrass turf areas. This combination offers the professional turf manager more knockout power and the speed associated with the Gordons line of Proform products. Weeds controlled include yellow nutsedge, crabgrass, foxtail, and many more. Q4 Plus is highly selective on coolseason turf grasses. Use sites include lawns, golf courses, cemeteries, public parks, sports turf, sod farms and other sites. Labeled species include bluegrasses, perennial and annual ryegrasses, fescues and bermudagrass. Q4 Plus is rain-fast in 6 hours and has a one week reseeding interval. Q4 Plus has dramatically less discoloration on cool-season turf compared to MSMA. Call-backs are a thing of the past when your clients and members can see fast results, usually within 24 to 48 hours.


  • Post-emergence control of both grassy and broadleaf weeds
  • Crabgrass and foxtail control
  • Extra knockout power on grassy weeds
  • Contains 0.75 lbs. ai/acre of quinclorac
  • Yellow nutsedge control
  • Fast visual response
  • Rapid activity and death of broadleaf weeds
  • Wide window of application for broadleaf weeds
  • Suitable for applications up to 90F
  • Labeling includes use on bermudagrass

Rate of use: Mix between 2.6 to 3 fl.oz. with 1 gallon of water for treatment of approximately 1,000 sq. ft. of turfgrass.

Active Ingredients:
  • Quinclorac - 5.69%
  • Sulfentrazone - 0.69%
  • 2,4-D, dimethylamine salt - 12.02%
  • Dicamba, dimethylamine salt - 1.38%

Product Label

    Customer Reviews

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    Based on 8 reviews Average Product Rating 5.0 stars
    5 Star Rating - 8 Customer Reviews (8)
    4 Star Rating - 0 Customer Review (0)
    3 Star Rating - 0 Customer Review (0)
    2 Star Rating - 0 Customer Review (0)
    1 Star Rating - 0 Customer Review (0)
    • Verified buyer
      5 star rating Rosen!und R. Rosen!und
      08-07-2023

      Poor packaging

      Q4 is a very good product. When package was opened, the container had been leaking.

    • Verified buyer
      5 star rating Michael P Kirby M. P. K. Michael P. K.
      21-05-2023

      Q4 from Seed World

      Excellent product and shipping from Seed World

    • Verified buyer
      5 star rating Dexter Clemons D. C. Dexter C.
      28-04-2023

      Yard Savior

      Been using this product for about two years now and has been an absolute savior in controlling weeds which propagate from my neighbor's yard into mine. This stuff eliminates anything that isn't considered grass (especially crabgrass). My yard remains a lustrous green free of weeds all year long. Great product and will continue to purchase.

    • Verified buyer
      5 star rating Julie Reese J. R. Julie R.
      07-04-2023

      Q4 from Seed World - Best Value on the Internet

      Q4 is a great selective weed killer that I use on my fescue grass in East TN. Seed world offers the best price so I order from them. They ship fast and have excellent customer service. Their website is excellent and I want to research ordering seeds from them as well. Thanks to Seed World!

    • Verified buyer
      5 star rating Johnie Hodge J. H. Johnie H.
      30-03-2023

      Works Fast!

      Can see a change overnight, but having used this product a few times now, it does not go as far as it says on the bottle. Maybe double the strength for use on cool season grass lawns.

    • Verified buyer
      5 star rating Nelson Austin N. A. Nelson A.
      20-02-2023

      Q4 herbicide

      Fast shipping

    • Verified buyer
      5 star rating Dirk Bron D. B. Dirk B.
      07-02-2023

      Q4 plus

      Great stuff, fast shipping and lowest price around. Will buy again

    • Verified buyer
      5 star rating James Bailey J. B. James B.
      21-12-2022

      Q4 Plus Herbicide

      Excellent product for weed and crabgrass control.

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    Category: Q4 Plus Herbicide

    Type: Herbicide

    Brand: PBI Gordons Corp


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