A somewhat fast-growing, but nonetheless moderately difficult, short, cylindrical cactus. Its spines can be quite variable, with varieties having almost completely black spines to almost fuzzy white crowns blanketing the plant. What's interesting about this one is that it has bicolored magenta-yellow flowers, a rare feature among cacti (similar to the genus Oroya).

Likes well-draining soil and very bright exposure. Its quick growing speed (among globular and short columnar cacti) can lead to etiolation.
Prefers winter dormancy.

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