I had it for a few years, but it hasn't reappeared this year. It's lovely in flower. Not sure what you would like to know?

I understand that it is not hardy in the uk so will need to be under cover for winter and need sharp well drained soil. I also find T violacea borderline hardy. So I bring it into the greenhouse.

Got the name wrong. T violaceae is what it should be. Duh!
Ta.

Did I give you any help? Mine is in full flower at the moment but as I said it doesn't go directly into the ground. I usually plant the pot and then late Sept I lift the pot and it lives in the unheated greenhouse.