Liquid or powdered Borax for killing Creeping Charlie on lawn
YOUR ORIGNAL RESPONSE called for dissolving 10 oz. of Borax in 4 oz. of water . I find it impossible to
dissolve this mixture. Perhaps you meant 10 oz. of liquid Borax?
St. Croix County Wisconsin
Thank you for contacting eXtension. Unfortunately, the expert with whom you last corresponded is not online at the moment; however, the proportions you mention are the correct "recipe" for discouraging Creeping Charlie. The initial 4 ounces of water should be warm to make the solution easier to accomplish. You'll then add another 2.5 gallons of water, so if you need to use some of that to dissolve the Borax, go right ahead. The point is to make a slurry that will disperse throughout the entire treatment medium. The process is described in some detail in this University of Illinois Extension document: