Mammillaria Haageana Description: Plants usually solitary, sometimes sprouting at the base or sides when old. Each head is surrounded by a complete ring of starlike pink flowers. There are ample variations among plants from different origin.
Stem: Globularor somewhat elongate in age, glaucous green, up to 15 cm high, (3-)5-10 cm in diameter, apex wolly.
Sap: Without latex (or vaguely milky, whitish-yellowish, but not slimy)
Tubercles: Small, (3-)5-6 mm hight, crowded, conical/pyramidal, four-angled basally.
Axil: Slightly woolly only on new growth, later naked.
Areoles: 2-3 mm, oval, whith white wool when young.
Radial spine: (14-)8-30(-38), smooth, acicular, straight or slightly curved, white, radiating, bristly, 3-6 mm long.
Central spine: usually 2 (but variable from 0 to 6), slender, rigid, straight, not hooked, erect, divergent, black to reddish, turning grey as the ages (3-)6-10(15) mm long. The lower one usually longer
Flower: Deep magenta-pink to pale pink, funnel-shaped, up to 10 mm long, 8-15(-20) mm in diameter. Pericarpel 1,3-2,5 mm long, receptacle-tube 1,3-2,9 mm long, external tepals 2-10 mm long, 1-2 mm wide, linear-lanceolate purple red with a greenish base, internal tepals 6-11 mm long pink to purple with a darker midvein. Filaments whitish or pinkish.
Blooming season: February to April.
Fruit: Red, pinkish at the base, about 1 cm long.
Cultivation and Propagation: It is a free-flowering and relatively easy plant to grow.
Exposition: Full sun to light shade.
Watering: Water regularly in summer but do not over-water. Keep dry in winter. Hardy down to -4°C.
Growing tips: It is better that they be repotted regularly. Repotting will increase the number and size of stems, and will increase the number of flowers produced. Repot yearly until it reaches about 3 cm in size, then every two or three years will suffice. Repotting is best done at the end of winter, but it can be done at other time, too. Do not water for a couple of weeks after repotting, in order to reduce risk of root rot via broken roots.
Propagation: Seeds or offsets if available.