Barrel Cactus Cacti
Gymnocalycium Pflanzii is a cactus native to Paraguay an northern Argentina, growing in a spherical form, to a diameter of 10 to 15 cm. Groups of sharp spines form on the tips of the pronounced tubercules, and a crown of 3 or 4 cm pink white flowers.
Minimum temperature reported to be around around 0°C, though is recommended to keep warmer!
Keep dry in winter.