Pyrrhocactus bulbocalyx

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valtr8
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Pyrrhocactus bulbocalyx

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valtr8
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Re: Pyrrhocactus bulbocalyx

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Aiko
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Re: Pyrrhocactus bulbocalyx

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I recently acquired a few small Pyrrhocactus bulbocalyx. I was thinking of allowing them to overwinter without any frost protection, expecting them to be able to take maybe -10C. I read upon this, and from Llifle and Cactus Art the (duplicated) text indicates to keep it above 0C, which seems quite high to me.

Anyone that can confirm my idea? Or do they really need to be protected from frost?
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