Cactus e Dintorni

Habitat: Mexico.
Description: cacti with a globular or cylindrical green stem, apex usually covered with wool-like hairs, conical tubercles and radial spines. The flowers appear in the summer and open during the day. It is synonymous with Cumarina, and sometimes with Echinocactus and Thelocactus as well. It has now been included in Neolloydia.
Soil: basic mix.
Location: place in full sun.
Temperature: minimum temperature of 5°C.
Water: moderate.
Cultivation tips: propagate from seed, cuttings or offsets.
Main species of Gymnocactus: Gymnocactus subterraneus (syn. Thelocactus, Neolloydia, Turbinicarpus), a dwarf plant with a tuberous root that thrives in mineral chalky soils; Gymnocactus knuthianus is dwarf, globular and needs little water, mineral soil and a minimum of about 5°C (41°F); Gymnocactus beguinii, a dwarf cactus that enjoys full sun and mineral soils; min. temp.: 5°C (41°F); Gymnocactus horripilus forms clumps and thrives in full sun and mineral soil improved with chalk, min. temp.: 5°C (41°F); Gymnocactus wiereckii.