Mammillaria Hahniana

 Mammillaria hahniana are small green-bodied cactus that with age can form colonies. They are covered with white hairs and, like all mammillarias, but no ribs spirally arranged tubercles. These tubers with conical-cylindrical and can reach almost 1 cm in length and in their armpits have numerous white bristles. 

They have up to 30 radial spines and 2 central spines of which one points down and the other up. They produce crowns of small purple flowers on top of the cactus. They bloom from winter to mid-spring. There are different varieties, some with the apex with greater or lesser wooliness. Flowers occur profusely forming an annulus around the pole of the plant; its size is rather small (1-2 cm in diameter) are deep pink and have narrow, lanceolate, acute and with a central band of dark crimson petals.



  1. Scientific Name: Mammillaria hahniana Werderm.
  2. Synonyms: Mammillaria hahniana subsp. hahniana
  3. Common Names: Old Lady Cactus
  4. Family: Cactaceae
  5. Subfamily: Cactoideae
  6. Tribe: Cacteae
  7. Subtribe: Cactinae
  8. Genus: MAMMILLARIA
  9. Species: M. hahniana


source pic: zzseeds.com
Hardiness:
  • USDA Zone 9a: to -6.6 °C (20 °F)
  • USDA Zone 9b: to -3.8 °C (25 °F)
  • USDA Zone 10a: to -1.1 °C (30 °F)
  • USDA Zone 10b: to 1.7 °C (35 °F)
  • USDA Zone 11: above 4.5 °C (40 °F)



How to Grow and Care

Easy to grow and commonly cultivated, most mammillaria cacti tend to be small and spherical with dense hairs or spines, which has given them the nickname “puff-ball cactus.”

All cacti need well-drained soil, but it’s especially crucial for mammillaria species—cactus fans will often call them “mamms” for short—as they tend to be prone to root rot due to their shape and size.
For beginners, a commercial cactus mix is often your best bet. 


Certainly, if you’re buying pre-mixed potting soil, make sure you’re choosing a cactus-friendly mix. Cacti do not require lots of extra nutrients, so look for a mix without built-in fertilizer...– See more at:HOW TO GROW AND CARE FOR MAMMILLARIA


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