Skip to site navigation

Mammillaria hahniana AGM

Home  |  Plants > Plant Selector > Mammillaria hahniana AGM

© RHS 1999

Characteristics

Plant type

Cactus/Succulent, Conservatory/Greenhouse or Houseplant

Habit

Clump-forming

Resilience

Hardiness

H2 (tender - cool or frost-free greenhouse)

Colour

Flower

Purple and Red in Spring and Summer

Fruit

Red in Autumn

Stem

Green and Grey/Silver in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

5-10 years


Preferred common name

old lady cactus

Family

Cactaceae


Mammillaria are spiny cacti with spherical or columnar stems, often in clusters, with many prominent tubercles, and funnel-shaped flowers usually in a ring near the apex of the stem

M. hahniana is a cactus with solitary or clustered stems to 20cm in height, with dense white bristles and fine spines; flowers 1cm in length, rose-red, followed by small red fruits

Other common names

  • old lady of Mexico
  • old lady pincushion
  • old woman cactus

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, East-facing or North-facing
  • Sheltered

Cultivation

Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter

Soil

  • Well-drained
  • Neutral, Alkaline or Acid
  • Loam or Sand

Propagation

Propagate by seed sown at 19 - 24ÂșC in early spring or by offsets

Suggested planting locations and garden types

Patio/Container Plants


How to care

Pruning

No pruning required

Pests

May be attacked by mealybugs

Diseases

Generally disease free