PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerate bright indirect indoor light, avoid prolonged harsh midday summer sun
Watering
Water deeply only when soil is completely dry; avoid overwatering to prevent root rot
Temperature
Thrives at 18–30°C; tolerate brief light frost down to 5°C if kept dry
Characteristics
- Leaf: Modified into sharp, yellowish radial spines clustered around raised areoles
- Flower: Large, fragrant white funnel-shaped blooms opening at night, up to 20 cm long
- Stem: Globular to short columnar green stem with 11–15 prominent, rounded ribs
Care Guide
Watering
Water when soil is fully dry (every 7–10 days)
Fertilization
Diluted cactus fertilizer once monthly. Cease fertilization in autumn and winter when growth enters dormancy
Eggshell powder topdressing：Grind dried eggshells into fine powder; sprinkle lightly on soil surface, avoid direct contact with the cactus stemPruning
- Remove dead or damaged spines and areole debris to maintain plant cleanliness
- Detach healthy offset pups in spring for propagation
- Trim any soft, rotting stem tissue immediately to prevent spread of decay
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported adverse effects
Humans: No known toxic effects on humans
Garden Uses & Culture
Culture: N/A
Usage: Ornamental cactus for rock gardens, container planting, and indoor succulent collections
