Campanula Plants

Use of salt on campanula

Zone Emsworth, on the south coast of England | Anonymous added on March 15, 2018 | Answered

I have allowed parts of my garden to be overrun with campanula which looks so pretty in summer. I now find it is almost impossible to get rid of, and find it described on the internet by several writers as completely ineradicable. However, having found how easily dandelions can be destroyed by common salt, which seems to be little known, I have started a trial in a rough part of the garden to see if this works also on campanula. After just a few days it shows signs of working, and I would like to extend the trial to flower beds. But the question arises, even if I succeed, will I ever be able to grow proper flowers there again, and if so, what should I try? In particular, will bulbs grow there? Do you know any other treatment for campanula?

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Answered on March 15, 2018

Enough salt to kill a campanula infestation is going to adversely affect your soil. You may get the top to die back but the roots live on. The salt and/or vinegar treatment lives on on the internet. It works for annuals but is less effective on perennials. Toxic amounts of any salt affects how well roots can absorb nutrients. Unlike nitrogen, salts don't move through the soil quickly.

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