The Q&A Archives: Nuisance Plants

Question: How can I rid my garden of Crown vetch?

Answer: Crown vetch is very difficult to eradicate, which is why it is used as a groundcover along highways. With or without using chemicals, you will have a hard time eradicating it. However, the following might work: mow it off as short as possible, leave the clippings in place. Cover with a thick layer of newspaper or cardboard followed by a heavy layer of mulch. The idea is to exclude all light and smother it. This can take up to a year and may need to be repeated. Glyphosate (Round Up) will kill the tops of the plants but the roots will live so repeat applications will be necessary. Glyphosate will kill other plants, too so use it with caution. Good luck with your crown vetch eradication project.

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