This solitary globular cactus is up to 100mm (4in) thick with up to 21 conical tubercles and is completely covered in long white hairs, spines and bristles. The funnel-shaped diurnal flowers are red and appear during summer.

Hardiness zones 10 to 11

Mammillaria hahnianais naturally found in North America growing in central Mexico in an open sunny position on gravelly well drained soils tolerating some lime and is frost tender but drought tolerant.

The Old Lady Cactus is grown for its intricate whitish appearance. It is grown in botanical collections or cactus and succulent gardens or as a house plant. It is also planted in rockeries, roof gardens or small gardens establishing from division in 2 to 3 years and found in inland regions.ID 2089

Note:
The plant is solitary when young and forms offsets as it matures.

Mammillaria(măm-i-LAH-ree-a) hahniana(hahn-ee-AH-na)

Cactaceae(kak-TAY-see-ee)