Q4 Plus Turf Herbicide

$46.25 - $122.50

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Not for Sale to: NY
NY residents, see our New York Pest Control page.

$46.25$45.67$122.50$119.53
  Size/Description Price/Ea. Qty  
Q4 Plus Turf Herbicide quart(s)

Buy 1: $46.25 each

Buy 2 or more: $45.67 each

$46.25
Q4 Plus Turf Herbicide - Gallon gallon(s)

Buy 1: $122.50 each

Buy 2 or more: $119.53 each

$122.50
Total Price: $0.00


Availability: Normally ships in 1 business day.
For large order quotes, please call us at 1-866-581-7378.

Q4 Plus Turf Herbicide

Q4 Plus is highly selective on cool-season turf grasses. Labeled species include bluegrasses, ryegrass, tall fescues, and bermudagrass. Q4 Plus herbicide has a CAUTION signal word, a good toxicological profile, is rain-fast in 6 hours and has a 4 week reseeding interval.

  • Convenient post-emergent control of both grassy and broadleaf weeds
  • Crabgrass and foxtail control
  • Yellow nutsedge control
  • Wide window of application for broadleaf weeds
  • Protox inhibitor activity for rapid desiccation and death of broadleaf weeds
  • Fast visual response
  • Highly selective on cool-season turf grasses
  • For use on bluegrass, ryegrass, tall fescue and bermudagrass
  • Rain-fast in 6 hours
  • Suitable for applications up to 90 degrees F
  • Water-based formulation

Active Ingredient: Quinclorac 8.43% Sulfentrazone 0.69% 2,4-D, dimethylamine salt 11.81% Dicamba, dimethylamine salt 1.49%
Target pests: For the suppression of yellow nutsedge, control of certain grassy weeds, such as crabgrass and foxtail, and control of most troublesome broadleaf weeds species in established cool-season turf areas.
For use in: golf courses, lawns, cemeteries, public parks, sports turf, sod farms and other sites.
NOT FOR SALE TO: NY
Manufactured By: PBI Gordon Corporation (UPC: 070251697861)



Rating Snapshot

5 stars   7
4 stars   2
3 stars   0
2 stars   0
1 star   0

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Average Customer Rating
4.8 star rating (9 reviews)

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  • 8 of 9 people found this review helpful:

    5 of 5 Stars  Great results
    By Kelley on March 26, 2012

    Very effective on all clover (even hop), and broadleaf weeds in my bermudagrass in NC. I highly recommend this product.

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  • 4 of 4 people found this review helpful:

    5 of 5 Stars  Great product
    By Edward on May 4, 2013

    This worked great to kill all the weeds and crabgrass in my 1 acre yard. I used late August of 2012. Used ratio as recommended on label in a 15 gallon tow behind sprayer. I had a little left, so I watered down maybe 1 gallon of the mixture to fill my 15 gallon tank, and it still killed alot of the crabgrass in my neighbors yard. Would buy again.

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  • 3 of 3 people found this review helpful:

    4 of 5 Stars  Worked Great
    July 21, 2013
    Verified Purchase

    Q4 worked great for the broadleaf weeds and blanket crabgrass in my bermuda lawn. Didn't damage the bermuda much, even though I sprayed when the temps were hot. It didn't work well on the large-leaf crabgrass, but it completly killed the low-growing blanket crabgrass.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  Great Stuff
    June 9, 2013
    Verified Purchase

    Kind of pricey, but you get what you pay for. Works great on getting rid of weeds, but don't get this stuff close to your flowers or they will be gone as well. I highly recommend this product.

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  • 2 of 2 people found this review helpful:

    5 of 5 Stars  It Works when other stuff failed
    August 8, 2013
    Verified Purchase

    I would agree with some of the other comments-there is some investment up front-but it's cheaper than hiring someone and it works. I tried other stuff from Lowes and Home Depot with no luck. Used it in hot weather but had little damage to my Bermuda grass. It killed some pretty large patches of crab grass and other weeds. Pay attention to the proper mix. Would buy again

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Works as Advertised.
    August 15, 2013

    I apply Q4 in two applications about 2 weeks apart with a 50 gal. boom sprayer, mixed at 1/2 gal to 45 gal of water. This seems adequate for covering about 3.5 acres. You can see the crabgrass begin to turn purple in about 3-5 days, then yellow in about 6-10 days. If you need a post-emergent crabgrass treatment, this is a good choice.

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  • 1 of 1 people found this review helpful:

    4 of 5 Stars  Turf Herbicide Q4plus
    August 28, 2013

    This product is very effective. Crab grass gets brown in two days. This has made crab grass dark brown in weeks time and appears crab is dead from top. This is too early for me to say that this chemical has gone to roots of crab to kill for ever.

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  • 1 of 1 people found this review helpful:

    5 of 5 Stars  Q4 Plus
    By David on September 19, 2013

    I use this product in my commercial lawn care business because it works good.

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  • 5 of 5 Stars  The best I've found
    By Mike on September 26, 2013

    I used Q4 on crabgrass, clover and wild violets. It has taken care of almost all of my weeds! The violets took a 2nd application, as the label states. I would recommend this to everyone.

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March 15, 2013Eric from Bear, De asked:

QTemperature to apply Q4 Plus?
What is good outdoor temperature to spray in? What is too cold?

AThe product label for Q4 states that you should not apply the product above 90 degrees.  Although it does not give a specific temperature for being too cold, most herbicides should be applied between 65 degrees and 85 degrees.

7 of 7 people found this answer helpful.
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June 17, 2013Don from Hugo asked:

QWill this product work better with the addition of adding a spreader sticker to my

AYes, you could most certainly add a surfactant like Nonionic Surfactant to help the herbicide to stick and penetrate into the xylem of tyhe weeds you are treating.

5 of 5 people found this answer helpful.
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May 15, 2012Bob from Lawrence, Ne 68957 asked:

QIs Q4 Plus Turf Herbicide effective on quack-grass in bluegrass lawn?

AQ4 is not labeled for quackgrass.  Quackgrass unfortunately is too closely related to Kentucky BlueGrass and most products that will kill quackgrass will also severly damage if not kill the KBG. The common recommendation is to kill the quackgrass with a glyphosate product and then reseed with KBG.

4 of 4 people found this answer helpful.
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November 8, 2011Jim from Javksonville, Florida asked:

QIs it ok and effective to use Q4 on Zoysia grass?
My yard was sodded three weeks ago. A lot of clover is growing up thru the grass, The grass is Zoysia. Please advise.

ANo, Q4 is not for use on Zoysia Grass and if used on newly sodded Zoysia you would most likely kill it.  We do have products you can use  to remove clover from Zoysia, however, we do not recommend applying any pre or post emergents on newly sodded grass.  Depending on where you live in the country, if you are in an area that is in transition and will soon be going dormant, if you apply a post emergent herbicide you can forever damage the Zoysia grass.  It is recommended that you wait a full growing cycle before applying pre or post emergents on your grass to ensure it can handle the shock of applying an herbicide.  We recommend that you mow your grass often to suppress the clover, water it often, and wait until next early summer to treat the clover if it still exists.  At that point in time your grass would have gone through the spring growing season and should be able to handle the application of an herbicide.  To remove clover and other weeds out of Zoysia grass at this point, we recommend SpeedZone.

3 of 4 people found this answer helpful.
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July 18, 2013Kevin from New Jersey asked:

QCan this product be applied with a hose-end sprayer?
My other option is a backpack sprayer but I'm looking to do the whole yard not spot spraying.

AYes, Q4 Plus can be applied using a hose end sprayer. You may however have more accuracy with the backpack sprayer. Please follow the product label for application.

2 of 3 people found this answer helpful.
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November 22, 2012Robert from Shelby Twp, Michigan asked:

Qhow effective is q4plus on wild violet?

AQ4 will work for wild violet but it may require a couple of applications to be effective.

2 of 2 people found this answer helpful.
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July 28, 2013Jason from Fort Gibson, Ok asked:

QMixture of Q4 plus per 1000 sq. feet?

AThe mixing ratio of Q4 really depends on what and where you are treating. The product label suggests using 1.8-2.6 fl oz per one gallon to treat 1000 sq. feet.

2 of 2 people found this answer helpful.
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July 12, 2013Mj from Roswell Ga asked:

QSprayed my yard with Q4 but had heavy rain 4 hours later. Should I re-apply?
I sprayed my Bermuda grass with Q4 about 11:30 am as the forecast did not call for rain till the next day. About 4:00 pm it poured rain for a good 45 minutes to an hour. I read the product is rain proof is 6 hours, but this was not quite 6 hours and the rain was very heavy. Should I re-apply or what?

AWere the rain to be a light sprinkle then the 4 hours should be okay, but with a heavy rain for that length of time we would suggest reappying the Q4 to ensure you get the accurate results you are looking for from this product. Please let us know if you have any other questions.

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October 8, 2013Rick from Louisville, Ky asked:

QHow much area will the quart size of Q4 Plus treat?

AThe amount of gallons of Q4 Plus Turf Herbicide will depend on what and where you will be treating. The product label suggests using 1.8-2.6 fl oz per one gallon to treat 1000 sq. feet.

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