Argentina (Tucum n).
Mammillaria schiedeana is an attractive, slow growing cactus, up to 4 inches (10 cm), with short, hairy spines. The stem is globular flattened, more or less rounded at the top, dark green, soft-fleshed, up to 2.4 inches (6 cm) in diameter. It has up to 120 thin radial spines per areole, white to pale cream with yellowish bases, up to 1 inch (2.5 cm) long. The flowers are white to cream, up 0.6 inch (1.5 cm) long and appear in winter..
Mammillaria species like most cacti they're drought tolerant and need very little care and attention to grow well . Plenty of sunshine will keep this cacti more than happy. Provide bright, even light to encourage tight growth and flowering. Some shade during a hot summers day can be helpful to prevent sunburn.
Allow the soil mix to become nearly dry between watering, but then water thoroughly. Suspend watering in the winter, but mist occasionally. Not enough sunlight and over-watering are common mistakes.
Use pot with good drainage and a very porous potting media.
Feed every 4 weeks with a high potassium fertiliser during summer
It is an excellent plant for garden rockery settings, desert type landscapes, patios and botanical gardens