I bought one like that a couple of years ago. It was labeled as Cereus forbesii monstrose "Ming Thing". If my memory serves accurately, I think
@DaisyI is growing it as well and longer than I have, so I'm tagging her in my response. It's very slow growing for me, so it's not one that will grow into it's container very quickly if it's a lot larger than the container than when it was purchased. Other than that, it hasn't been a difficult plant. It just sits there looking like it looks
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