Mammillaria hahniana
old lady cactus
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
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
5–10 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver | Purple Red | ||
|---|---|---|---|---|
| Summer | Green Grey Silver | Purple Red | ||
| Autumn | Green Grey Silver | Red | ||
| Winter | Green Grey Silver |
Position
- Full sun
Aspect
South–facing or North–facing or East–facing
Exposure
Sheltered Hardiness
H2Botanical details
- Family
- Cactaceae
- Native to the UK
- No
- Foliage
- Evergreen
- Habit
- Clump forming
- Genus
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
- Name status
Correct
- Plant range
- Mexico
How to grow
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
Propagation
Propagate by seed sown at 19 - 24°C in early spring or by offsets
Suggested planting locations and garden types
- Patio and container plants
Pruning
No pruning required
Pests
May be susceptible to mealybugs
Diseases
Generally disease-free
Get involved
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