MAMMILLARIA HAHNIANA MYSTAX – OLD LADY PINCUSHION CACTUS

Mammillaria hahniana (Old Lady Cactus)

The Mammillaria hahniana, commonly known as the “Old Lady Cactus,” is a charming and easy-to-grow cactus species. It belongs to the Cactaceae family and is native to Mexico, where it thrives in rocky areas. This cactus is admired for its rounded, globular shape, dense white spines, and fine wool-like hairs that give it a soft appearance. Mature plants often produce pink or purple flowers in a crown-like formation, adding to their aesthetic appeal.

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Key Features

1. Shape and Size: A globular cactus that grows up to 10 cm (4 inches) in height and 20 cm (8 inches) in diameter. It may form clusters over time.

2. Spines and Wool: Covered with radial white spines and woolly hair, protecting it from the harsh sun in its native habitat.

3. Flowers: Produces small, funnel-shaped pink or purple flowers in a ring around the top, usually in spring and summer.

4. Longevity: A slow-growing plant with a long lifespan when properly cared for.

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Care Guide

1. Light Requirements

Bright Light: Prefers full sunlight or bright indirect light. Place it near a sunny south- or west-facing window if kept indoors.

Acclimation: Gradually introduce the plant to direct sunlight to prevent sunburn.

2. Watering

Drought-Tolerant: Allow the soil to dry out completely between waterings.

Seasonal Watering:

Water every 2–3 weeks in spring and summer.

Reduce watering in fall and winter to once a month or less.

Avoid Over watering: Excess water can lead to root rot.

3. Soil

Well-Draining Soil: Use a cactus or succulent potting mix. Add sand or perlite for extra drainage if needed.

Ensure the pot has drainage holes to prevent waterlogging.

4. Temperature and Humidity

Ideal Temperature: Thrives in temperatures between 18–24°C (65–75°F).

Cold Tolerance: Can survive brief periods of cold down to -5°C (23°F) if kept dry, but prolonged exposure to frost should be avoided.

5. Fertilization

Feed with a cactus-specific fertilizer diluted to half strength during the growing season (spring and summer).

Fertilize once a month. Skip fertilization in the dormant winter months.

6. Repotting

Repot every 2–3 years or when the plant outgrows its container. Spring is the best time for repotting.

Be cautious of the spines—use gloves or a thick cloth when handling.

7. Flowering

Flowers are more likely to appear with adequate sunlight and proper care.

Patience is required as this cactus blooms only when mature.

8. Propagation

Offsets: The plant produces offsets (baby cacti) at its base, which can be removed and potted separately.

Seeds: Can be grown from seeds, though this method is slower.

9. Pest and Disease Management

Pests: Watch for mealybugs and spider mites. Treat infestations with neem oil or insecticidal soap.

Diseases: Avoid over watering to prevent rot and fungal infections.

10. Special Care Tips

Rotate the plant occasionally to ensure even growth.

Avoid placing it in overly humid areas like bathrooms.