PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerate bright indirect light for indoor cultivation; avoid prolonged intense midday sun in hot climates
Watering
Water deeply only when the soil is completely dry; avoid standing water to prevent root rot
Temperature
Hardy to 5°C; protect from frost in winter; prefer daytime temperatures of 20–30°C during growing season
Characteristics
- Leaf: Modified into sharp radial spines (white) and darker central spines (brown/black)
- Flower: Small, star-shaped, pale pink to white with bright yellow stamens
- Stem: Globular to cylindrical green stems covered in raised tubercles
Care Guide
Watering
Water when the top 5 cm of soil is fully dry; ensure excess water drains completely
Fertilization
Diluted cactus fertilizer applied once monthly. Cease fertilization in autumn and winter when growth slows
Eggshell powder topdressing：Crush thoroughly dried eggshells into fine powder; sprinkle a thin layer on the soil surface to boost calcium levels and improve soil drainage; avoid overapplication to prevent pH imbalancePruning
- Gently remove dead, dried spines or spent flower stalks to maintain appearance
- Separate healthy offsets from the parent plant in spring for propagation
- Trim overcrowded clumps to improve airflow and prevent pest infestations
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported toxicity
Humans: Non-toxic to humans; no known adverse effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for rock gardens, container displays, and xeriscaping
