This flower showed up mysteriously in my garden. A Facebook appeal has identified it as Korean Bellflower, Campanula takesimana. The warning is that it is invasive, but I have found it for sale from several nurseries on line. Only one Canadian company noted that it was a strong grower and needed to be kept in bounds. I also checked Google images so I think I have a good ID, even though there is not total agreement about how invasive it might be. However, I am playing it safe. I dug it all up. The roots had spread into other plants and I did have to sacrifice a ‘Blue Paradise’ phlox and part of this lady’s mantle when removing it. I kept in mind that it is best to clean out past the margins to make sure all the roots are gone.
I will probably plant an annual in the fairly large bare spot that is left. I don’t want to put any other perennials in peril. With just an annual there I’ll be able to keep close watch for more shoots of the Korean bellflower.
Has anyone else ever had this kind of problem? Finding an invasive plant mysteriously appear in the garden.?