Can this grass stay out over winter?

I brought this in last year, but I'm wondering whether I needed to.

 

Looks very similar to one I have had for years - never found it needed any protection down here - just an annual "clean up".

 

Thanks @Philippa

 

That looks like Uncinia rubra, a sedge which is evergreen and hardy down to minus 5 C. If temperatures start to approach that level I’ll be moving mine into the garage @BB3.

 

They're not reliably hardy here where I am, although I've had one which revived after seeming to be completely dead, mainly because the following winters were mild enough, so we weren't getting that many night below minus 5 or 6. It's the wet then freezing that's the problem for them IME.
I'd expect it would be fine outside where you are @BB3.