The Q&A Archives: Killing Lily of the Valley

Question: How do I get rid of Lily of the Valley? I have several areas around my yard where it grows crazy. I changed one of the gardens around that had some in it. I dug some out and left some for design. I put garden plastic down over the entire bed then at least two or three inches of chips. The lily is making mounds under the plastic. And if I missed a spot with the cover it really comes up, up to two feet away. I want to keep the design and stop it from every place else. What do I do, it is really hardy in full shade and full sun.

Answer: As you have discovered, this is a very tenacious plant, which is part of the reason why it makes such a good groundcover. You can continue to try to smother it, however it will take complete coverage and some time for this method to work. You could also use glyphosate according to the label instructions, being careful to apply it to only the undesired plants as it will kill desired plants, too. Some gardeners find the wipe-on application method more exact (easier to control) than the spray method. Good luck with your design!

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