Getting rid of a persistent patch of St. John’s Wort
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Question
Help! I need to get rid of some St. John’s Wort that has come up on a large portion of my lawn. This section actually used to be a vegetable garden that I let go back into grass. I would like to turn it back into a garden, but it doesn't seem to matter how deep I dig, I can’t get all the roots of the St. John’s Wort.
Image by Flickr / Gmayfield10
Answer
St. John’s Wort (Hypericum calycinum) is a perennial and mainly spreads itself by way of root systems. I would suggest combining two methods. First, mow the area as close as possible. Next, mulch the area with coarse wood chips, similar in texture to a tree that has been put through a wood chipper. Ensure the layer of mulch is 15- to 20-cm-deep (6- to 8-in.) and maintained year round. Cut back any emerging shoots with a weed trimmer. Be patient and persistent as you slowly suffocate and weaken the plant roots over time (remember the plant did not occur there overnight).
this plant never stops growing or sprading I dislike it very much hoping that this will work
Thank You
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