PlantFun
Plant Needs
Sunlight
Bright direct sunlight for 6–8 hours daily; provide partial shade during extreme midday summer heat to prevent sunscald
Watering
Allow soil to fully dry completely between waterings; avoid overwatering to prevent root rot
Temperature
Thrives in 18–30°C; tolerates brief light frosts down to 5°C only when soil is fully dry
Characteristics
- Leaf: Modified into sharp radial spines (15–20 per areole) and 1–2 shorter central spines per areole
- Flower: Small funnel-shaped white blooms with pale pink midribs, circling the cactus apex
- Stem: Globular green stem covered in raised tubercles (mammillae) with woolly areoles at their tips
Care Guide
Watering
Water thoroughly when soil is completely dry; reduce frequency during heatwaves to avoid sunscald
Fertilization
Diluted low-nitrogen cactus fertilizer once monthly. Use high-phosphorus fertilizer to promote abundant spring blooming
Eggshell powder topdressing：Crush baked, cooled eggshells and mix into the top 1 cm of soil; avoid direct contact with the cactus base to prevent mold growthPruning
- Remove dead, shriveled offsets to maintain tidy clumping growth
- Trim brown, damaged spines or tubercles with sterile tweezers to improve appearance
- Separate overcrowded clumps during early spring repotting to encourage healthy growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA verified: Non-toxic to cats; no reported toxicity risks
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 indoor cactus collections
