Hello, I picked this up at a local garden center yesterday. It seems to be a new hybrid circulating in the plant trade. "Propagation prohibited" says the label. An internet search says it's a C. rotundifolia hybrid, not much else .
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I'm sure it will be hardy
I'm sure it will be hardy wherever you are.
I could only add that it was probably bred by a Danish firm for the potted plant market. No Law in the World could stop you from from propagating it as long as you didn't sell it I would have thought?