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.
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.
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 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.
Yes you can. We recommend waiting at least one week between treatments.
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.
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.
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 should be fine to mix with a pre-emergent such as Dimension 2EW as long as both labeled rates are followed for application. We would recommend doing a tank mix compatibility test first to make sure there is no clumping when mixing the two products together.
ideally, you would want to aerate and detach the lawn prior applying herbcides to avoid any distrubtion of the herbicide being absorbed into the weeds. You can view our Lawn Care Schedule Guide for more information on timing. Typically, we recommend waiting at least one week after the application of to Q4 Plus Turf Herbicide allow your turf to not become over-stressed by product application.
Please contact the manufacturer of [N-Ext] Air-8 0-0-5 / D-Thatch 0-0-2 Combo product for any timing restrictions.
How much Q4 Plus Turf Herbicide you use per 4 gallon tank will depend on what size area you cover with 4 gallons (i.e. 4,000 sq ft, 500 sq ft) as well as what kind of turfgrass you are treating. You may also view the full application rates on the product label here.
Keep in mind that Q4 Plus is not safe to use on many warm season grasses such as St. Augustine and Centipede.
If you have a 40 gallon sprayer, this is actually the ideal amount of water volume to use for most post emergent applications such Q4 Plus Turf Herbicide per acre. This gives you close to 1 gallon of finished solution per 1000 sq/ft of surface area which is the average most products and volumes should cover. You can either adjust the nozzles to allow for a heavier output as you pull, slow your speed so that you are not pulling as quickly and can allow a heavier water volume to be put out over a smaller area, or you can make essentially a double pass over the entire lawn until the tank is empty. We would recommend typically the first or second option, as the risk with double passes on the lawn is uneven distribution of the chemical and more chance of lawn burn if concentrations are high in certain spots.
No, Q4 Plus Turf Herbicide is not labeled to control or kill goosegrass. Pylex is labeled to treat goosegrass and can be safely applied to Kentucky Bluegrass. Pylex Herbicide is mixed at 0.023 - 0.046 oz. per 1,000 sq. ft. Please see the label for complete application instructions.
Q4 Plus is labeled to be applied to zoysiagrass at the rate of 1.8 to 2.6 fl oz per 1000 sq ft (5 to 7 pints/acre).
The product label advises that tolerant turfgrass species may exhibit temporary turf injury and temporary yellowing on fine fescues, bermudagrass and zoysiagrass. Please review the Bermudagrass & Zoysiagrass information on page 4 of the product label for more information.
Yes, Q4 Plus Turf Herbicide can be tank mixed with other insecticides, fungicides and herbicides according to the product label. Be sure to follow Tank Mixing instructions per the product labels and do a small tank mixture first to ensure there is no clumping between the two products.
Q4 Plus Turf Herbicide is labeled for yellow nutsedge and follow up treatments may be needed. Please refer to the chart on page 4 of the product label for timing, conditions and rates for application.
Please take a moment to review our Nutsedge Treatment Guide for more information.
The rate amount of Q4 Plus Turf Herbicide needed is going to depend on the type of turfgrass you have (Cool/Warm Season) and also how many square feet the 40 gallon tank sprayer will cover evenly and thoroughly.
For Cool Season Grasses, the rate is 2.6 - 3 oz. per 1,000 sq. ft. (7 - 8 pints per acre) and Warm Season Grasses, the rate is 1.8 - 2.6 oz. per 1,000 sq. ft. (5 - 7 pints per acre)
Please view the product label for more information.
Since wild strawberry weeds are more susceptible to herbicides when they are actively growing, it is better to wait until temperatures cool off—with mid-spring or early fall applications being the best time.
Q4 Plus Turf Herbicide is mixed at 1.8 to 2.6 fl oz per gallon of water per 1000 sq ft for wild strawberry. Be sure you are evenly and thoroughly spraying the wild strawberry foliage and using the 1 gallon mixed solution per 1000 sq ft area. Do not mow the lawn 2 days before or 2 days following the application.
Please view the full product label for more information.
Q4 Plus Turf Herbicide is safe for use on established Kentucky bluegrass and on fine fescue when it is part of a mix. If you have fine fescue that is not mixed with the bluegrass, then there may be some temporary discoloration. You should not add a surfactant to Q4 Plus Herbicide since this may cause extra sensitivity on the desirable grass. Please refer to the product label for complete application instructions.
