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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:||Barnyard grass, Bull Thistle, Chickweed, Clovers, Crabgrass (large & smooth), Dandelion, Nutsedge yellow, Signalgrass and others
* See label for complete list
|For use in:||Golf Courses, Commercial and Residential Lawns, Cemeteries, Public Parks, Sports Turf, Sod Farms and others
* See label for complete list
|Application:||Cool Season Grasses: 2.6 - 3 oz. per 1,000 sq. ft. (7 - 8 pints per acre)
Warm Season Grasses: 1.8 - 2.6 oz. per 1,000 sq. ft. (5 - 7 pints per acre)
* See label for complete application instructions
|Pet safe:||Yes, if used as directed on label|
|NOT FOR SALE TO:||NY, MA|
|Shipping Weight:||2.54 lbs|
|Manufactured By:||PBI Gordon Corporation|
Post Emergent Control of Grassy Weeds
Q4 Plus Turf Herbicide for Grassy & Broadleaf Weeds can provide post-emergent control and suppression of the grassy weeds listed. Apply to weeds during the growth stages. Applications under adequate soil moisture conditions are preferred. Early summer treatments are generally more effective. Applications in the summer (approximately July 15 to August 15) to older, drought stressed grassy weeds are less effective. Late summer applications (after August 15) to mature crabgrass can be very effective. Weed control is affected by the spray volume, timing and the weed growth stages.
Post Emergent Control of Broadleaf Weeds
Apply this product to broadleaf weeds that are young and actively growing for the best results. Spring and fall treatments under adequate soil moisture conditions are preferred to the summer treatments. Generally, summer broadcast applications to older, drought stressed weeds are less effective. Fall applications provide improved control for emerged winter annuals and perennials such as henbit, chickweed, clover and ground ivy.
- Calibration and proper application are essential when using Q4 Plus Turf. Spray coverage should be uniform and complete.
- Over applications can result in turfgrass injury.
- Cool-Season Turf: 2.6 to 3.0 fl. oz. with 1 gallon of water for treatment of approximately 1,000 sq. ft. of turfgrass. Apply to weeds during the growth stages.
- Warm-Season: 1.84 to 2.57 fl. oz. with 1 gallon of water for treatment of approximately 1,000 sq. ft. of turfgrass. Apply to weeds during the growth stages.
- See specific Bermudagrass and zoysiagrass on label.
See all 37 reviews »
20 of 21 people found this review helpful:
By Edward on 05/04/2013
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.
19 of 20 people found this review helpful:
By Kelley in Durham, NC on 03/26/2012
Very effective on all clover (even hop), and broadleaf weeds in my bermudagrass in NC. I highly recommend this product.
13 of 13 people found this review helpful:
By in Indiana on 06/09/2013
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.
10 of 11 people found this review helpful:
It Works when other stuff failed
By in Atlanta on 08/08/2013
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
8 of 8 people found this review helpful:
By in Central FL on 07/21/2013
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.
By George in bel air, md 21014 on 09/06/2017
Better price than my whole seller, super fast shipping.
By Charles in Piedmont SC on 08/15/2017
Sprayed Q4 on yard weeds and, within three days they were dead. Wished I had found this product sooner
By Chris in Concord, NC on 08/08/2017
This is a good product to kill leafy weeds. Good price with fast shipping through domyownpestcontrol.com. I have heard there are similar products that do the same thing at a cheaper price, but have not used those products as of yet.
0 of 1 people found this review helpful:
Did not get the desired result
By Kevin in Columbus, Ohio on 07/29/2017
I got this after reading several reviews stating it would work well for wide blade grass like weeds. I mixed according to directions, 3 Oz to a gallon. I sprayed it on a few areas and on a few broad leaf weeds. It seemed to weaken things slightly but killed nothing. I waited a little over a week and tried a second round. The surrounding grass seems to be more distressed than what I was trying to kill. Needless to say I'm very disappointed.
By Mike in Dumont NJ on 07/14/2017
this product is fantastic. i have not found anything that comes close to the results i get from this.
Helps with tough weeds
By User1 in aquidneck island, RI on 06/19/2017
Glad to find a product that works on weeds some commonly available selective herbicides do not kill. Red Sorrel, for example. Yes, cost is a bit high, but results matter
By Kevin in Stafford, VA on 06/09/2017
Definitely worth the price. I tried using the stuff purchased at Lowes, Home Depot, etc...it was not effective as this product. Only wished I bought it sooner so I didn't waste my money on the others.
4 of 6 people found this review helpful:
Decent but not as great as I thought
By James in Riverside, Ca on 05/14/2017
I was excited about purchasing this product after reading great reviews. The product works but slowly and when I mean slowly, my results took about a week to 2 weeks to start seeing weeds shrink but not completely shrink to nothing either. The weeds were still but in a diminished state albeit dieing state. On a different treatment session, if you spray too much to try to get better or faster results it WILL kill the grass too. By too much, I mean trying to put a slightly more product into the mix or spraying twice in the same area. The product also doesn't prevent near term future weeds from coming back either, just a few weeks after treatment, more weeds sprang up to take dying ones place. I was told by my gardener after treatment it was suppose to last a couple months weed free. The product was very decent and definitely better than what I'm use to using from the big box store Lowes and Home Depot but not as fast and and long lasting as expected.
1 of 1 people found this review helpful:
This stuff is great!
By Pk in Indianapolis, IN on 05/11/2017
Our neighbors had a terrible dandelion problem...the yard was nothing but those yellow flowers. So, we had a dandelion problem. Went to DoMyOwn and after researching and calling customer service with questions, decided on this product. It works! It literally took care of every single dandelion in the yard and fast. You must make sure you do the proper portions and exactly as instructed or you may not get the correct results. We used this product last year and then purchased for this year as well. The product is great and the customer service rep was very helpful in trying to find the right product for our needs. I will only shop on this site for my pesky problems.
1 of 1 people found this review helpful:
Q4 Plus Turf Herbcide
By Ronald in Borger, TX on 05/04/2017
I applied it almost two weeks ago and the largest majority of the weeds are dying. It did far better than the local professional lawn services we have used.
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07/28/2013 Jason from Fort Gibson, Ok
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.
03/15/2013 Eric from Bear, De
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.
10/05/2014 Joseph from Raleigh, Nc
QIs Q4 safe for a backyard where a dog would roam. If not, how long after application would be required?
We have a family dog that likes to go in the backyard, but are worried that something this extreme may make him unable to be outside. Is it safe? Once it's dry is it safe? This came highly recommended, but the person recommending it didn't know how it might effect pets.
AIt will be safe for you to apply Q4 Plus Turf Herbicide and allow to completely dry prior to allowing your dog in the treated area.
10/06/2015 Jim from Hamden, Ct
QHow long before I can reseed after I have applied Q4 Plus Turf Herbicide?
03/18/2015 Steve from Canton, Ga
QWhat is the shelf life on Q4 Plus Turf Herbicide?
AThe shelf life of Q4 Plus Turf Herbicide is 3-5 years if stored in a room temperature setting. This product should be kept out of extreme temperatures, which are under 35 degrees Fahrenheit and over 90 degrees Fahrenheit.
03/10/2017 Mike from Fulshear, Tx
QWill Q4 Plus Herbicide work in a Bermuda lawn to treat barnyard grass?
A Yes, Q4 Plus Turf Herbicide can be used to control barnyardgrass in a Bermuda lawn.†
Yes, Q4 Plus Turf Herbicide can be used to control barnyardgrass in a Bermuda lawn.†
03/08/2017 Gerry from Fresno, Ca
QHow soon after applying Q4 Plus Turf Herbicide can I water my lawn?
A You can water approximately 6 hours after application of†Q4 Plus Turf Herbicide. It is considered "rainfast" after this time. We do recommend waiting at least 24 hours before watering or irrigation for best results. †
You can water approximately 6 hours after application of†Q4 Plus Turf Herbicide. It is considered "rainfast" after this time. We do recommend waiting at least 24 hours before watering or irrigation for best results.
03/05/2017 Terry from Little Rock, Ar
QCan Q4 Plus Turf Herbicide be used to suppress or control poa annua?
I saw some information on the label on poa but I was not able to clarify.
A Q4 Plus Turf Herbicide is actually not labeled to control poa at all.† You may be able to use a product like Certainty instead.† Please check the product label to be sure it can be applied to the grass in the area you will be treating.†
Q4 Plus Turf Herbicide is actually not labeled to control poa at all.† You may be able to use a product like Certainty instead.† Please check the product label to be sure it can be applied to the grass in the area you will be treating.†
02/28/2017 Ken from Piperton
QWhat can I use for crabgrass and wild onion in bermudagrass?
A Q4 Plus Turf Herbicide†is labeled for both crabgrass and wild onion in bermudagrass.
Q4 Plus Turf Herbicide†is labeled for both crabgrass and wild onion in bermudagrass.
02/17/2017 Sergio from Tucson, Arizona
QIs Q4 Plus Turf Herbicide selective for St. Augustine grass?
I have a Sod farm , i want to kill weeds in my St. Augustine plantation, how will Q4 effect the St. Augustine variety?
A Q4 Plust Turf Herbicide is not labeled safe for St. Augustine grass, the active ingredients in this product will burn the grass if it's applied to it.†
Q4 Plust Turf Herbicide is not labeled safe for St. Augustine grass, the active ingredients in this product will burn the grass if it's applied to it.†
02/01/2017 Chris from Mountain Home, Ar
QWhat liquid fertilizer can I add to Q4 Plus Turf Herbicide?
I live in Arkansas(the northern transition area for grasses) and need to know what liquid fertilizer i can mix with Q4 so that I could possibly do an application in one spraying instead of two.
A CoRon 18-3-6 Plus 0.5% Fe that can be used with Q4 Plus Turf Herbicide. These two products can be mixed together and applied at the same time. Be sure to do a small tank mix test first to ensure there is no clumping between the two products.
CoRon 18-3-6 Plus 0.5% Fe that can be used with Q4 Plus Turf Herbicide. These two products can be mixed together and applied at the same time. Be sure to do a small tank mix test first to ensure there is no clumping between the two products.
12/30/2016 Christopher from Virginia Beach
QWill it be effective to spray Q4 Plus Turf Herbicide in January in tall fescue?
I live in Virginia Beach, Virginia.
A Q4 Plus Turf Herbicide is a post-emergent herbicide, so it will only be effective on existing plants that are actively growing. You should not use any post-emergent herbicides during winter temperatures or when weeds are dormant.
Q4 Plus Turf Herbicide is a post-emergent herbicide, so it will only be effective on existing plants that are actively growing. You should not use any post-emergent herbicides during winter temperatures or when weeds are dormant.
10/11/2016 Chevo from Burke, Va
QHow long after re-seeding my tall fescue lawn in Fairfax, VA may I apply Q4 Plus?
I applied Drive xlr8 herbicide to my one acre tall fescue lawn in Fairfax, VA. 10 weeks ago, but it did NOT kill all my crabgrass. On 9/15/16, I core aerated, re-seeded, and applied McGill Compost to my lawn. The new grass is growing well, but I still have few weeds (crabgrass). Since it has been nearly 30 days since I re-seeded my tall fescue lawn, can I apply Q4 Plus Turf Herbicide to kill the remaining weeds? Our current temps are 50s at night to 60s to 70s during the day. BTW, I've already purchased and received the Q4 from your store. Thanks!
10/10/2016 Jim from Cedar Rapids, Ia
QWhy should I only use Q4 Plus Turf Herbicide twice a year?
I was using T-Zone SE to spray my yard and switched to Q4 Plus to include getting rid of Crabgrass as well. I spray my entire yard with Q4 Plus in April and September. The label says ONLY two broadcast applications per year. The problem is the Ground Ivy (Creeping Charlie). The Q4 Plus kills 90-95% of it in April but by the time September comes around, it's all grown back. My question is why can't I spray three times a year? I would think spraying in April, July and September would probably eradicate the Ground Ivy eventually. I might take a couple years but only spraying twice a year is not going to win the battle. I believe the two applications a year is based on the 2-4D in the product.
A Products such as†Q4 Plus Turf Herbicide†should only be applied the maximum amount of times listed on the product label. †This how often the manufacturer has determined it is safe for the environment to use them. As ground ivy is a winter weed, it is best controlled when products are applied in the Fall as they start to green up. †Another option is to simply pull it up in between applications, though this may take several months of doing so to gain complete control.
Products such as†Q4 Plus Turf Herbicide†should only be applied the maximum amount of times listed on the product label. †This how often the manufacturer has determined it is safe for the environment to use them. As ground ivy is a winter weed, it is best controlled when products are applied in the Fall as they start to green up. †Another option is to simply pull it up in between applications, though this may take several months of doing so to gain complete control.
09/14/2016 Bruce from Crozet, Va
QWhat is the shelf life of Q4 Plus Turf Herbicide in a garage?
I made the mistake of storing Q4 in the garage. It is not effective this year as a result. Do I need to toss the remainder in the bottle or mix the solution with more product?
A Q4 Plus Turf Herbicide†should be stored in a cool dry place and not exposed to extreme temperatures, i.e. above 90 and below freezing. †If it was stored in less than optimal conditions, and you are noticing that it has separated in the bottle and with shaking will not go back into solution or it is not as effective, we would recommend replacing it.
Q4 Plus Turf Herbicide†should be stored in a cool dry place and not exposed to extreme temperatures, i.e. above 90 and below freezing. †If it was stored in less than optimal conditions, and you are noticing that it has separated in the bottle and with shaking will not go back into solution or it is not as effective, we would recommend replacing it.