(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
This cactus is a small and very slowly growing cactus. It has a dark brown epidermis, and it also has short and pale spines that are flattened against its body. The flowers usually begin to bloom in the late spring and open for about 12 days; they are white and pinkish with a yellow middle.
Recommended temperature zone: USDA: 9b-11
Minimum avg. temperature: 50°F (10°C)
Heat tolerance: Light shade in Phoenix
Sun exposure: Light shade to full sun
Origin: Argentina (Catamarca, Cordoba) at low elevation
Watering needs: Summer grower, water regularly in summer, keep rather dry in winter
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz