The Q&A Archives: Invasive Orange Mint

Question: Several years ago I made the mistake of planting orange mint in a perennial garden I was making. The orange mint took over and I couldn't stop it from doing so. Last year, my husband rototilled the entire garden, screened the soil and we started over again, building a new perennial garden. The orange mint is back in full force. What should I do to get rid of this once and for all? I would sure love to have a beautiful perennial bed while I'm still on earth!

Answer: Mint is one of those pernicious weeds, when it grows where it is not wanted. You may have to resort to using an herbicide containing glyphosate because this plant seems to regenerate itself from just the smallest bit of root or stem left in the soil. Follow the directions carefully as this is a nonselective herbicide and be sure to leave it enough time to work fully to the roots before removing the treated top growth. Since it is in a flowerbed, you may find the wipe-on application preferable as it is easier to avoid contacting the desirable plants using this method. Good luck!

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