Where it grows
Gymnocalycium ragonesei is native to Argentina and has a highly restricted range of occurrence in that country.
Special features
This Gymnocalycium is quite small, and has a dark colouration with a rounded stem shape. It produces large white flowers.
Care Guide
Gymnocalycium is an easy cactus to care for, though care should be taken to not expose this species to frost. This plant can handle full morning sun, and will enjoy a sunny spot in a cactus greenhouse. Plant it in a gritty and well-aerated soil mix that allows for free drainage of water. Water it well in the spring and summer growing season, but keep dry in winter.
Growing season
Spring and summer.
PropagationÂ
Seeds.