This was responded to yesterday. What happened to the answers? There is mint and an unidentified plant there. https://www.houzz.com/discussions/6282541/please-name-this-plant-too-thanks

No there is no mint in photo.

Yes there is. 100%. Rub the leaves of the plants at the back and sniff.

Yes there is mint in the pot with the Campanula punctata. I'm sticking with that ID for now.

Someone sold me this plant saying that it was Japanese ester, does it look like Japanese's aster?

If anything it could be Chinese aster, Callistephus chinensis. But it's wet and wilted to hard to say what it is.

Kalimeris incisa is sometimes referred to as Japanese aster, the foliage could be a match, but more importantly it's the kind of fast spreading plant that gets traded around and can hold its own against mint.