Gymnocalycium castellanosii ssp. ferocius Plant

Gymnocalycium castellanosii ssp. ferocius – Bold Spines & White Blooms from Argentina

Product Description:

• Scientific Name: Gymnocalycium castellanosii ssp. ferocius
• Common Name: Ferocious Chin Cactus (碧岩玉)
• Family: Cactaceae (Cactus family)
• Growth Zones: 9–11 (indoor in cooler climates)
• Mature Height: 2–4 inches
• Mature Width: 3–5 inches
• Growth Rate: Slow
• Sunlight: Partial sun to full sun
• Soil: Well-draining, gritty or all-mineral cactus mix
• Watering: Generous in summer, keep dry in winter
• Temperature Tolerance: Hardy to 5°C, protect from frost

Key Features:

• Compact, solitary green globes with deep rib notches
• Thick, curved amber-to-grey spines with strong visual impact
• White summer blooms that contrast beautifully with spiny form
• Ideal for collectors or xeriscape container gardens
• Native to Córdoba, Argentina with high germination from seed

Care Tips:

• Light: Thrives in bright indirect light to full sun; stronger light promotes spine development
• Water: Water deeply in summer when dry; keep completely dry in winter
• Ventilation: Ensure good airflow to prevent rot in humid conditions
• Common Issues: Overwatering in winter may cause root rot; soft stems indicate excess moisture
• Pests: Occasionally susceptible to mealybugs—treat early with neem oil or alcohol swabs

Notes:

Gymnocalycium castellanosii ssp. ferocius, also known as 碧岩玉, is a striking member of the Gymnocalycium genus prized for its fierce spines and elegant white flowers. Native to the rocky landscapes of Córdoba, Argentina, it thrives in sunny, well-drained settings. The chin-like tubercles and rugged appearance make it a standout in cactus collections. Propagation is easy via seed with excellent germination rates. Whether for collectors or minimal-care growers, this cactus brings wild elegance into any indoor or outdoor setup.