It freezes really well. I must do something with ours which seems rampant this year.
We lost no end of stuff - all the pelargoniums which were stored indoors got frosted when we had a really cold spell and snow lay on the ground for a week; about 15 fuschias (including my favourite pair which were the first thing that Mr BM bought me when we reunited 6 years ago); quite a few perennials, several hostas and all but 2 of the 10 dinner plate dahlias. I think a lot of things struggled with the severe heat in the summer and then had to cope with a really cold snap.