PlantFun
Plant Needs
Sunlight
Full sun to partial sun; tolerate 4–6 hours of direct daily sunlight; avoid intense midday summer sun to prevent sunscald
Watering
Allow soil to dry completely between waterings; reduce frequency significantly in winter to prevent root rot
Temperature
Thrives in 18–30°C; tolerate brief light frost down to 5°C if soil is fully dry
Characteristics
- Stem: Globular, bright green, covered in raised tubercles arranged in spiral patterns
- Spines: 15–20 white radial spines per tubercle; 1–2 darker brown central spines
- Flower: Small funnel-shaped blooms, pink to pale purple, clustered around the stem apex
Care Guide
Watering
Water thoroughly when top 5 cm of soil is dry; avoid wetting stem or spines
Fertilization
Diluted cactus fertilizer once monthly. Stop fertilizing in autumn and winter when the plant is dormant
Eggshell powder topdressing：Crush fully dried eggshells into fine powder; sprinkle a thin layer on soil surface to boost drainage and calcium content without causing nutrient buildupPruning
- Gently remove dried flower stalks and dead spines to maintain plant appearance
- Divide overcrowded clumps in spring during repotting to promote healthy growth
- Trim any soft, rotting stem sections immediately and allow cut ends to callus before repotting
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats
Humans: No known toxic effects on humans
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for small rock gardens, container collections, or indoor windowsill displays
