Pterocactus valentinii

This Pterocactus is one with soft hairy spines. Pterocactus forms thick rootstocks that help to survive the dry periods.

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Cultivation notes:
Use a loose sandy (mineral) soil. Precise minimum temperature unknown but -12 degrees Celsius ,when kept absolutely dry, should be ok. Keep this Pterocactus valentinii in full sun. In that case it will stay nice compact.