Q4 Plus Turf Herbicide should not be used to treat weeds under the canopy or within the drip line of trees. Per the product label, this product cause injury to non-target plants if applied to foliage, stems, or roots.
The mixing ratio of Q4 Plus Turf Herbicide for Fescue is 7- 8 pints per acre (2.6 to 3.0 fl oz/1000 sqft). When broadcasting your water volume may change so while the concentration of product per area is the same as the spot treatment, if your turf is very dense you may need 2-4 gallons of water over 1000 sq/ft, vs the only 1 gallon needed for spot treatments. Please review the product label for more information.
Q4 Plus Turf Herbicide can be applied at the same time as a fertilizer. As always be sure you are applying these products during the cooler times of the day when temps are below 85 degrees.
Q4 Plus Turf Herbicide does not require the use of a surfactant.
Q4 Plus Turf Herbicide is not labeled to control dallisgrass. Please review our How to Get Rid of Dallisgrass Treatment Guide for information on eradicating this weed.
Q4 Plus Turf Herbicide should only be mixed when you are ready to apply the finished solution. You will want to use within 24 hours for the most effectiveness.
The product label for Q4 Plus Turf Herbicide 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, when the target weeds are actively growing.
We do not recommend coming Q4 Plus Herbicide with other post-emergent herbicides such as Triclopyr Ester. The Q4 already contains 4 active ingredients and covers a wide variety of weeds, so adding more active ingredients could damage your desirable turfgrass.
While you can add a surfactant with Hi-Yield Triclopyr Ester, we do not recommend adding it to Q4 Plus since that can increase the risk of injury to your desirable turf.
You can apply Q4 Plus Herbicide anytime the target weeds are young and actively growing. This product will not work well in very cold temperatures, so we recommend applying Q4 Plus when air temperatures are around 60-85 degrees for best results. Be sure that your turfgrass is listed as tolerant on the product label.
Yes you can. We recommend waiting at least one week between treatments.
After an application of Q4 Plus Turf Herbicide, you do not want to water for at least 24 hours.
Q4 Plus Turf Herbicide is most effective when applied to a dry lawn to allow the product to fully adhere to the leaves, and is best applied when no rain is expected in the next 24 hours.
Q4 Plus Turf Herbicide is labeled safe to use on a variety of grass species, however you will need to check the Product Label for your grass type before purchasing or applying the Q4 to make sure you have a tolerant species. Q4 Plus is great for controlling crabgrass and a wide variety of other weeds such as nutsedge, clover, wild violet, etc.
Q4 Plus Turf Herbicide does not list seashore paspalum on the label as a tolerable species so it would not be recommended to apply to it.
Q4 Plus Turf Herbicide can be applied 3 to 4 weeks after sodding new grasses so it should be safe for you to apply it now to treat/control oxalis. Q4 Plus is not labeled to kill poa annua, since it's also a cool season grass, you can only spot treat with a non-selective like Roundup to get rid of it.
You could mix Q4 Plus Turf Herbicide with another selective post-emergent labeled for use on your specific turf to target Poa Annua. You would want to follow the most restrictive product label, and it is advisable to do a small tank or jar test prior, to make sure the mixture is stable before attempting a full tank application. Additionally, unless you are in a southern most state where the temperatures are well over 50 degrees, this would not be an appropriate time for this application. Please refer to our Lawn Care Schedule for the ideal time to apply post-emergent herbicides to your specific lawn type.
If a second application of Q4 Plus Turf Herbicide is needed, per the product label, there needs to be at least 30 days between applications but no more than 2 broadcast applications in a year span.
Yes. You will want to remove weeds before reseeding. How long it takes Q4 Plus Turf to kill the weed will depend on the health and maturity of the weed. The weeds normally will start to die within one week of application but could take up to three weeks. A second application may be needed.
