Mine all have !
I have a number of these plants throughout the front and back gardens here and each one of them has survived the last 2 cold winters.
You've not given any details on your profile, so no-one can really compare their site/area to yours but .... mine have survived just fine.

my delosperma have come through the winter too...hardier than it looks...

Thanks.
I live in East Yorkshire which isn't on the list of counties!
Janbar

Ah ! I see !
Yes, i agree with Sandra, it is hardier than it looks :-)