Whatever they are, they've handled 15 F so far. I'm betting they won't do so well with -20 F though.
Since the nursery told me they all came from the same place, I suspect the third one is another in the same series and probably Delosperma Carmen Lucia.
Carmen Lucia does have that different center that Janet noticed on mine, which makes me think there was some interesting breeding going on in these plants.
I've definitely decided that I'm going to bring in some pieces and root them, provided they haven't gone too dormant. They would be plenty hardy for folks like Lynn.
