Giant chin cactus (Gymnocalycium saglionis)

Giant chin cactus

Giant chin cactus is a slow-growing globular cactus native to the arid regions of Argentina. It boasts a green, fleshy body with prominent ribs and areoles that sport sparse spines, enabling it to minimize water loss while withstanding extreme sun exposure. Its large white or pink funnel-shaped flowers bloom near the crown, contrasting vividly against the subdued tone of its thick skin, a testament to its resilience in harsh environments.

Scientific classification

Species

Giant chin cactus (Gymnocalycium saglionis)

Pinks, cacti, and allies

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Perennial

Lifespan

Succulent

Plant Type

90 cm

Plant Height

70 cm

Spread

Pink

Flower Color

20 - 41 ℃

Ideal Temperature

Care Guide for Giant chin cactus

Every 3 weeks

Water

Full sun

Sunlight

20 - 41 ℃

Ideal Temperature

Water: Giant chin cactus is drought-tolerant, needing infrequent thorough watering when the soil is dry. During growing seasons (spring to fall), water once or twice weekly, and once weekly in winter. Use rainwater or distilled water, avoiding tap water to prevent soil compaction and water on stems to avoid rot.

Fertilize: During growing seasons, fertilize giant chin cactus monthly with liquid fertilizer; avoid winter fertilization. Use slow-release fertilizer when repotting. Apply low-concentration nitrogen fertilizer for seedlings and phosphate-potassium before/after blooming. Yellowing and slow growth may indicate over-fertilization; cease fertilization if this occurs.

Pruning: Giant chin cactus features a large, globular shape with prominent ribs and requires minimal pruning. The optimal time to prune is early spring to ensure better air circulation and disease prevention. Always remove dead or damaged parts with sterilized tools while handling the plant carefully.

Propagation: Giant chin cactus thrives in arid climates and reproduces effectively via seeds. For propagation, select healthy seeds, sterilize the substrate, and lightly cover seeds with sand or vermiculite. Maintain humidity with ventilation, ensuring not to overwater to avoid rot.

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