Too late to repot?
I don't mind leaving it and coming around the pot in the ground. It's already budding so would I shock it?
It'll be fine to be repotted, but it would be better in the ground. Liatris make quite decent clumps over time, so you'd have to keep dividing it if you want it potted long term.
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...