Sphagnum moss winter care

[GregorK]

hello

In my previous post i was asking for bark storage tips and now i am interested in how to treat my live sphagnum moss over winter.

I have in in a plastic bowl and i keep it moist all the time.
But i dont know how to take care of it when the winter comes. It can get really cold here ( -20°c).
Should i take it inside and grow it like before, or should i leave it on my balcony over winter ( dry, or wet?) to freeze like in nature?

Should i cut, dry and store the "harvest" or just leave it like it is- full grown?

Thanks in avance for the tips

Gregor