Mammillaria plumosa

In nature it grows on limestone rocks at an altitude between 730 and 1,350 meters above sea level. As the plant grows, it forms more and more pillow-shaped heads, reaching up to 30 cm in diameter. As the name suggests, its spines are white, soft and feathery. They shade the plant from the brightest sunlight, but also spread the light evenly to all sides of the green tubercles. The pale yellow or pink flowers have a sweet scent.