Water
Allow the soil to dry out completely between waterings. Overwatering is the most common cause of root rot. Reduce watering significantly during the winter dormancy period.
In summer, water thoroughly when the soil is dry to the touch.
Also known as Old Lady Cactus · Old Woman Cactus · Old-Lady Pincushion
Mammillaria hahniana, also known as the Golden Pincushion Cactus, is a small, globular cactus with dense white wool and attractive pinkish-red flowers.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers bright, indirect sunlight.
75% intensity
Can tolerate some direct sun but avoid intense afternoon sun.
Allow soil to dry out completely between waterings.
25% intensity
Reduce watering in winter.
Cactus Mix
50% intensity
Average room temperatures are suitable during the growing season.
50% intensity
Tolerates cooler temperatures in winter dormancy (around 10-15°C).
Feed during the growing season.
25% intensity
Use a diluted cactus fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Allow the soil to dry out completely between waterings. Overwatering is the most common cause of root rot. Reduce watering significantly during the winter dormancy period.
In summer, water thoroughly when the soil is dry to the touch.
Pruning is generally not required for Mammillaria hahniana unless removing offsets or damaged parts. If you need to control its size or shape, use a clean, sharp knife.
Allow any cuts to callus over before replanting to prevent rot.
Propagated primarily through offsets (pups) that grow around the base of the parent plant. Gently remove offsets with a sharp knife, allow them to callus for a few days, and then plant in well-draining cactus mix.
Seed propagation is also possible but slower.
Repot every 2-3 years or when the pot becomes too small. Use a well-draining cactus or succulent potting mix. Choose a pot with drainage holes. Repot in spring before active growth begins.
Handle with care to avoid spines.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Mammillaria Hahniana (Mammillaria hahniana)
Where Mammillaria Hahniana (Mammillaria hahniana) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Mammillaria |
| Species | Mammillaria hahniana |
Similar in genus Mammillaria
Answers based on plant encyclopedia data
