How do I kill mint in my flower beds? Too much to just try to dig up.
Carroll County Maryland
Roughly pull off the top growth of the mint. Spray the stubble with an herbicide that contains glyphosate. This is a systemic, which means it will travel down and kill the roots. This is a total vegetation killer also, and this means it will kill anything it contacts. Protect your desired plants with a shield of cardboard or plastic.
After spraying, lay several layers of newspaper over it (if you can) and then cover with no more than 2-3 inches of mulch. This adds a smothering layer for good measure and helps prevent regrowth (not to mention it is great for keeping weeds out and keeps them from germinating.)
Some growth will escape, hiding in flower clumps, etc. Dig that out.