PlantFun
Plant Needs
Sunlight
Full direct sunlight for 6–8 hours daily; provide partial shade during extreme midday summer heat to avoid sunscald
Watering
Water deeply only when the soil is completely dry; avoid overwatering to prevent root rot in dormant periods
Temperature
Thrives in 18–30°C; tolerate brief drops to 10°C but avoid frost exposure
Characteristics
- Leaf: Reduced to small, sharp radial spines clustered around areoles
- Flower: White, fragrant funnel-shaped blooms opening at night, up to 8 cm in diameter
- Stem: Globular to short cylindrical, bluish-green skin with 8–12 prominent, rounded ribs
Care Guide
Watering
Water thoroughly when soil is fully dry, every 1–2 weeks
Fertilization
Diluted cactus-specific feed once every 4 weeks. Suspend all fertilization during winter dormancy to support natural rest period
Eggshell powder topdressing：Crush dried, rinsed eggshells into fine powder; sprinkle a thin layer on soil surface to boost calcium content without burning rootsPruning
- Remove dried flower stems and dead spines to maintain a tidy appearance
- Detach healthy offset pups in spring for propagation
- Avoid cutting healthy stem tissue; minimal pruning is required for growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic; minor skin irritation from spines if contacted
Humans: No systemic toxicity; minor skin irritation from sharp spines if handled
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for container displays, rock gardens, and miniature desert landscapes
