Q4 Plus Turf Herbicide is not labeled to be safely applied to St. Augustine lawns. Blindside WDG and Atrazine are both labeled for St. Augustine Lawns.
Please view our St. Augustine Lawn Guide and Lawn Care Guides 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.
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.
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.
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.
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 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.
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.
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.
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.
Q4 Plus Turf Herbicide is rainfast after 6 hours but is best applied when there is no rain expected within 24 hours after application. It is more if there are dry conditions that you need to water 24 hours before or after application. Per the product label if rainfall is not expected within 2 - 7 days you should water in yourself 1/2 inch as recommended.
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.
Q4 Plus Turf Herbicide states on the product label: For optimum results irrigate 24 hours before and 24 hours after applications with ½ inch of water.
Q4 Plus Turf Herbicide can be applied as broadcast twice a year with 30 days in between each application as directed on the label.
No you cannot tank mix Q4 Plus Turf Herbicide with another product like Speedzone which also contains 2,4-D.
Q4 Plus Turf Herbicide should not be applied to anything edible and you should avoid areas where there are desired ornamentals, shrubs, trees, groundcovers, flowers and landscaped beds. It should only be applied to listed, established turfgrasses for the targeted weeds.
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.
Q4 Plus Turf Herbicide is applied at the following rates:
Broadcast Treatments for Cool Season Turfgrass (kentucky bluegrass, perennial ryegrass, fescues, annual bluegrass, rough bluegrass, annual ryegrass)- Use rate per Application is 7 to 8 pints per acre or 2.6 to 3.0 fl oz/1000 sq/ft. 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.
Yes, Q4 Plus Turf Herbicide is labeled for poison ivy. Apply this product to broadleaf weeds that are young and actively growing for the best results.
