PlantFun
Plant Needs
Sunlight
Requires 6–8 hours of full direct sunlight daily for optimal blooming; tolerates partial shade with reduced flowering
Watering
Water deeply only when the soil is completely dry; avoid overwatering to prevent root rot
Temperature
Thrives at 18–30°C; tolerate brief cold down to 5°C if soil is dry; protect from frost damage
Characteristics
- Stem: Globular to short cylindrical, pale green, with 11–15 prominent, rounded ribs
- Spines: 8–10 thin radial spines per areole (5–10 mm long) and 1 stouter central spine
- Flower: Large funnel-shaped blooms, pale yellow to creamy white, opening at night
Care Guide
Watering
Water thoroughly when soil is fully dry; allow excess water to drain completely
Fertilization
Diluted cactus fertilizer applied once monthly. Use a low-nitrogen fertilizer to promote blooming rather than excessive stem growth
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on the soil surface, avoiding direct contact with the cactus stem to prevent moisture buildupPruning
- Remove dead or damaged stems in spring to maintain colony health
- Trim offset pups in early spring for propagation; let cut ends callous before planting
- Clear fallen debris from around the base to reduce pest and fungal habitat
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic; no adverse systemic effects if ingested
Humans: No known systemic toxic effects to humans; spines may cause minor physical injury
Garden Uses & Culture
Culture: Symbolizes endurance and quiet resilience in arid environments
Usage: Ornamental container plant; rock garden specimen in arid climates
