Average Rating
Rating: 4.5
123 Reviews |
Product Overview
Q4 Plus Turf Herbicide for Grassy and Broadleaf Weeds is a weed killer that contains four powerful active ingredients –quinclorac, sulfentrazone, 2,4-D, and dicamba. This combination controls crabgrass, yellow nutsedge, and broadleaf weeds making it a versatileall-in-one product. Q4 Plusis highly selective on cool-season turf grasses. It is labeled for use on turf species includingbluegrasses, ryegrass, tall fescues, and bermudagrass. Q4 Plus herbicideis 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 and zoysia
- Rain-fast in 6 hours
- Suitable for applications up to 90 degrees F
- Water-based formulation
Per the product label: Turfgrass tolerance to this product may vary and temporary turfgrass yellowing may occur on fine fescues, Bermudagrass, and zoysiagrass (see specific Bermudagrass and zoysiagrass sections). Apply only to fine fescue when it is part of a mixed stand of cool-season turf/cool-season blends. Tolerant turf species listed on this label may exhibit temporary turf injury. The best tolerance occurs under optimal conditions for the turfgrass.
For use in California: Biotypes of large and smooth crabgrass in California have shown varied response to this product. If control failure occurs following a full or split application, DO NOT reapply this product. Change to a herbicide with a different mode of action.
Product Documents
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Q4 Plus Turf Herbicide Label
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Q4 Plus Turf Herbicide SDS
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Q4 Plus Turf Herbicide Supplemental Document
Features and Specs
| Active Ingredient | 2,4-D, dimethylamine salt 11.81%, Dicamba, dimethylamine salt 1.49%, Quinclorac 8.43%, Sulfentrazone 0.69% |
|---|---|
| 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 |
| Formulation | Professional Product |
| NOT FOR SALE TO | AK, HI, PR MA, NY (Restricted To Licensed Applicators Only) LA, TX (1 & 2.5 Gallon Sizes Restricted To Licensed Applicators Only) CA, WA (2.5 Gallon Size Restricted To Licensed Applicators Only) |
| Shipping Weight | 2.55 lbs |
| Manufacturer | PBI Gordon Corporation |
| UPC | 070251697878 |
| EPA Registration | 2217-930 |
Details
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.
SPOT TREATMENTS:
- 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.
| 5 stars | 86 | |
| 4 stars | 23 | |
| 3 stars | 3 | |
| 2 stars | 6 | |
| 1 star | 5 |
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Great product
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.
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59 of 64 people found this review helpful
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Great results
By Kelley on 03/26/2012
Verified Purchase Very effective on all clover (even hop), and broadleaf weeds in my bermudagrass in NC. I highly recommend this product.
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49 of 50 people found this review helpful
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It Works when other stuff failed
By Anonymous on 08/08/2013
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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46 of 49 people found this review helpful
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Great Stuff
By Anonymous on 06/09/2013
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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31 of 33 people found this review helpful
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Worked Great
By Anonymous on 07/21/2013
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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29 of 31 people found this review helpful
Verified Purchase 
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Questions & Answers
Have a question about this product?
Q
Mixture of Q4 plus per 1000 sq. feet?
A
The 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.
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301 of 333 people found this answer helpful
Q
Temperature to apply Q4 Plus?
What is good outdoor temperature to spray in? What is too cold?
A
The 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.
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247 of 256 people found this answer helpful
Q
Is 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.
A
It 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.
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189 of 203 people found this answer helpful
Q
How long before I can reseed after I have applied Q4 Plus Turf Herbicide?
A
If you will be reseeding the area, turf species listed on the product label can be seeded one week after the application of the Q4 Plus Turf Herbicide.
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167 of 176 people found this answer helpful
Q
How to treat my lawn for weeds without killing my grass?
I have fescue grass with many types of weeds I am new to treat lawns so I need help choosing a product. I have a lot of green clover and dandelion. I have sprayed amine 400(2,4-D) but it has not really done the perfect job I seen the dandelion die but clover is unaffected by this product.
A
Q4 Plus is highly selective on cool-season turf grasses such as fescue and works extremely well on various broadleaf weeds including clover.
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133 of 142 people found this answer helpful
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