Drive XLR8 can take up to 3 weeks to see full results on targeted weeds and a second appliation may be needed for more established weeds. Keep in mind, for best results, applications should be applied to listed weeds when they are young and actively growing and temperatures are between 65-85 degrees. For actively growing crabgrass, Drive XLR8 is mixed at 1.45 fl oz per 1000 sq ft along with adding 0.16 - 0.48 fl. oz Duo Stick per gallon of water. If only treating 500 sq ft, you would cut those rates in half, mixing Drive XLR8 at 0.72 fl oz in one gallon of water along with the 0.16 to 0.48 fl oz of Duo Stick Surfactant.
It is important to follow the recommended rates per the product label and not overmix or overtreat to avoid burning or injury to your turfgrass. You may see some discoloration, burning or wilting of your turfgrass as the rate applied of 2 fl oz Drive + 1 fl oz Surfactant over 500 sq ft is double the labeled rate.
Drive XLR8 Herbicide Crabgrass Killer states on the product label DO NOT irrigate the area for 24 hours after the application. If rainfall does not occur 2-7 days after the application, irrigation of at least 1/2 inch of water is desirable.
Your dilution rate depends on what you are specifically treating. Please see the Drive XLR8 product label for diltuion rates (see table starting on page 7).
The Drive XLR8 Label does not specifically mention Big Bluestem grass or Indian grass on the label whether it be as a target pest or as a tolerant species to the product. From the links below from the USDA NRCS it states that those grasses are tolerant to most broadleaf herbicides and should not be harmed if product directions are followed and applied accurately. That being said, you can follow the link below to the USDA Service Center Locator to speak with your local conservationist in your region on what works bests in your area and what products they may recommend.
Big Bluestem Grass
http://plants.usda.gov/factsheet/pdf/fs_ange.pdf
Indian grass
http://plants.usda.gov/factsheet/pdf/fs_sonu2.pdf
USDA Service Center Locator
Drive XLR8 Herbicide Crabgrass Killer could be mixed with Resolute 65 WDG as long as you follow the instructions on both product labels. However, if you are already seeing weeds it is too late for any pre-emergent to be effective.
Drive XLR8 Herbicide Crabgrass Killer is labeled to control dollarweed but cannot be used in St. Augustine lawns.
Speedzone Southern is labeled for Dollarweed and for use on St Augustine grass. According to the Speedzone Southern product label: The turf tolerance to this product may vary and temporary turf grass yellowing may occur on St Augustine. Do not apply Speedzone Southern to Floratam, Bitterblue or other improved species of St Augustine. Do not broadcast or spot spray St Augustine during the fall to winter transition or if temperatures are expected to fall below 40F within 10 days of the application.
Please take a few moments to read through the product label completely for full instructions and other precautions.
Yes, Drive XLR8 Herbicide can safely be used on your Kentucky luegrass/rye/fescue lawn. Please see the product label for complete application instructions.
You can let your players re-enter the area after the Drive XLR8 Herbicide Crabgrass Killer has dried. This can take at least 2 hours.
No, Drive XLR8 Herbicide Crabgrass Killer should not harm your Tall Fescue Grass if used as directed on the product label.