put new plant in rockery and within two days it was all eaten except the stems
I'm sorry for the issues with your garden, it's frustrating, I know.
Neem Oil is a good organic treatment for most pests. It is safe for people, pets and bees.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
Is this plant really invasive and spread a lot?
It may be invasive in some regions.
http://www.pfaf.org/User/Plant.aspx?LatinName=Campanula+alliariifolia
I have this plant in my garden l wish to remove it. Is there any way of removing and stop new shoots producing each year?
If you can dig up as much as possible, then this will help greatly. After this, you can pour boiling water on the plant, and around the area. This will kill off any growth, and all roots in the area. This should rid you of your problem.
My husband brought home a campanula from the supermarket yesterday. I think it is Campanula Canterbury. Can it be planted out in our garden when the weather warms? How do I care for it in the meantime?
I think you are referring to Canterbury Bells, Campanula medium. It is a biennial spending the first year in green growth and flowering the second year. It then dies but produces ample seed to collect or let fall. It likes full sun but will do OK in a south-facing window until after your frost free date. Acclimate it to the outdoors and enjoy. https://www.gardeningknowhow.com/ornamental/flowers/canterbury-bells/canterbury-bells-plant-how-to-grow-canterbury-bells.htm
Hello, I have just bought A campanula plant but I got it in the houseplant section. When I looked up info on it, it seems to be an outdoor plant. Any suggestions what I do,plant in or out? Many thanks
This is an outdoor plant in most areas. These are champions at surviving the cold. You can plant it outdoors for the best results. Here is an article for more information: https://www.gardeningknowhow.com/ornamental/flowers/campanula/growing-campanula-bellflowers.htm
Hi. A friend of mine has a cup and saucer vine. It looks like a cup and saucer campanula, but I can't find it under campanula, so it may be another kind. Do you know what the name is and where to find it?
Check out Cobaea scandens. Many seed companies stock it. https://www.gardeningknowhow.com/ornamental/vines/cup-saucer-vine/growing-cup-and-saucer-vine.htm
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?
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.