Answer: I'm afraid digging out the lily of the valley, roots and all, is the only way to safely eradicate them. If creeping charlie is well established in your lawn, use this home remedy to control it: mix 10 ounces of 20-Mule Team Borax (available at your grocery store in the laundry soap section) in 2-1/2 gallons of water and applying the mixture to their lawn. The boron doesn't affect the grass, but overwhelms the roots of creeping charlie. Cool weather reduces its effectiveness, so apply in May when the weather starts to warm. The University of Minnesota and Iowa State University have tested this recipe and report good results.
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