Mammillaria Carmenae Cactus plant

Mammillaria Carmenae Description: Mammillaria carmenae is a small solitary or clustering cactus with globose stems, the areoles with about 100 cream radial spines; white or pink-tinged flowers 1cm in length are borne towards the apex of each stem in spring and summer.
Stems: Globose to ovoid, 4-10 cm high, 3-5 cm in diameter. Without latex.
Tubercles: Conical. Axil: Woolly and bristly.
Radial spines: More than 100, soft, fine, flexible, star-like, white or pale yellow (or gold), up to 5 mm long.
Central spines: There are no central spines.
Flowers: Diurnal, (usually) creamy white to pink or pale pink with pink tinged midribs, up to 11 mm long.
Blooming season (Europe): Plants blooms at the same time in late winter-early spring, and are very generous with their flowers.
Fruits: Greenish.
Seeds: Black.

Cultivation and Propagation: It is a relatively rapid growing species. This is easily grown into clumps, but it does often have an irregular pattern of offsetting. Water regularly in summer, but do not over-water (rot prone). Use a pot with good drainage and a very porous potting media. Keep dry in winter. Feed with a high potassium fertilizer in summer. It is quite frost resistant if kept dry, hardy as low as -5° C. Outside full sun or afternoon shade, inside it needs bright light, and some direct sun.
Easily clustering and easily flowered. Most plants will offset readily, and clumps can be produced in a few years.
Propagation: By division, or direct sow after last frost.