Cacti - Mammillaria Hahniana - Old Lady Cactus

Mammillaria hahniana – Old Lady Cactus | Woolly Charm with a Crown of Flowers

Mammillaria hahniana, or the Old Lady Cactus, is a beloved species from central Mexico celebrated for its soft, cloud-like appearance and seasonal crown of blooms. Its rounded, globular body is cloaked in silky white hairs and fine spines, giving it a fluffy, sculptural quality that stands out in any collection.

In spring and summer, this cactus rewards growers with a delicate halo of pink to purple flowers, encircling its snowy-white surface like a living jewel. Compact and easy to grow, it thrives in containers, windowsill gardens, or grouped with other cacti for a striking desert display.

Key Features

• Soft, Woolly Look – Dense white hairs create a charming, fluffy appearance.
• Flower Crown Effect – Vibrant pink to purple blooms circle the crown in warmer months.
• Compact Growth – Globular shape, reaching up to 25 cm tall and 20 cm wide.
• Collector’s Favorite – A beloved species, perfect for displays and mixed cactus arrangements.
• Hardy & Adaptable – Naturally suited to dry, arid conditions with minimal care needs.

Care Guide

• Light: Bright indirect light indoors; full sun outdoors with some protection from harsh midday rays.
• Water: Water sparingly—allow soil to dry out completely between waterings. Reduce in winter.
• Soil: Use a gritty, well-draining cactus mix for healthy root growth.
• Temperature: Best in warm, dry conditions (15–30°C). Protect from frost.
• Feeding: Fertilize monthly in the growing season with a diluted cactus fertilizer.
• Repotting: Every 2–3 years in spring, using fresh cactus soil.
• Pests: Watch for mealybugs and spider mites; provide airflow to avoid fungal issues.

Perfect For

✔ Windowsills & Indoor Pots – Compact size suits small spaces beautifully.
✔ Cactus & Succulent Collections – A standout species with year-round appeal.
✔ Rock Gardens & Desert Displays – Thrives in arid, low-water landscapes.

Mammillaria hahniana is more than a cactus—it’s a living crown jewel that brings texture, charm, and seasonal bursts of color to any collection.

The succulent plant housed in the red pot comes in a 130mm diameter container. While the image provides a representative depiction of what you will receive, but may vary slightly because no two succulents are the same. 

Want your succulent with a pot?

We usually ship bare root for freshness and to keep costs low, but we’re happy to pot your plant on request!

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