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 and zoysia
Rain-fast in 6 hours
Suitable for applications up to 90 degrees F
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.
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.
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.
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
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.
What is good outdoor temperature to spray in? What is too cold?
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.
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.
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.
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.
Q4 Plus is highly selective on cool-season turf grasses such as fescue and works extremely well on various broadleaf weeds including clover.