PlantFun
Plant Needs
Sunlight
Full sun to partial sun; tolerate bright indirect light indoors, avoid prolonged intense midday sun in hot climates
Watering
Allow soil to dry completely between waterings; avoid overwatering to prevent root rot and stem collapse
Temperature
Thrives in warm, dry conditions; tolerate brief light frosts (down to 5°C) only if soil is fully dry
Characteristics
- Leaf: Modified into sharp, silvery white radial spines (15–20 per areole) with shorter central spines
- Flower: Bright yellow, funnel-shaped blooms up to 5 cm wide, emerging from the crown
- Stem: Globular to short cylindrical, green, with distinct areoles spaced evenly across the surface
Care Guide
Watering
Water thoroughly when soil is completely dry; reduce frequency in high humidity
Fertilization
Diluted cactus fertilizer once monthly. Use low-nitrogen, high-phosphorus fertilizer to support flowering
Eggshell powder topdressing：Grind dried eggshells into fine powder, sprinkle 1–2 tsp on soil surface; avoid direct contact with stems to prevent burningPruning
- Remove dead, discolored spines or overcrowded offset pups to maintain airflow
- Trim any damaged or rotting stem sections with sterile sharp scissors
- Gently separate clumping offsets in early spring when rootbound for propagation
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed non-toxic; no adverse effects from ingestion or contact
Humans: Non-toxic to humans; no known health risks from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for rock gardens, container planting, and indoor sunny windowsills
