Description
Mammillaria senilis is a unique cactus species, recognizable by its dense white hairs that give it a woolly appearance. These “hairs” protect the plant from intense sunlight and cold temperatures in its natural habitat (Mexico).
When mature, it can produce beautiful pink to reddish-purple flowers at the top of the plant.
Because Mammillaria senilis grows slowly and can sometimes be sensitive on its own roots, it is often grafted onto Myrtillocactus. The rootstock (Myrtillocactus) is vigorous and provides:
- faster growth
- better resistance
- easier maintenance
The result is a decorative, strong cactus with a striking contrast between the woolly top and the blue-green rootstock.
Care
🌞 Light
- Needs plenty of light
- Tolerates direct sun, but allow it to gradually adapt to direct sunlight
- Ideal location: a bright spot with some direct sun (south- or east-facing windowsill)
💧 Water
- Water moderately
- During the growing season (spring–summer):
- only water when the potting soil is completely dry
- During autumn and winter:
- almost no water
- Important: the grafting area should not remain wet for long periods
🌡 Temperature
- Summer: 18–30 °C
- Winter: preferably cool (5–12 °C), but frost-free
- A cool winter encourages flowering
🌱 Soil
- Well-draining cactus soil
- Can be mixed with extra sand or perlite if needed
🌼 Fertilizer
- During spring and summer:
- feed with cactus fertilizer once a month
- Do not fertilize during winter
🪴 Repotting
- Every 2–3 years
- When repotting, check whether the rootstock (Myrtillocactus) is healthy
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