Pack Size: 20, 100, 300
Year: 2026
Accepted Scientific Name: Gymnocalycium quehlianum (F.Haage ex H.Quehl) Vaupel ex Hosseus
Origin and Habitat:
Gymnocalycium quehlianum is a compact cactus species native to central Argentina, particularly the province of Córdoba. It inhabits dry, rocky hillsides, open grasslands, and gently sloping terrain at elevations of approximately 500–1,500 metres. Plants grow in well-drained, mineral-rich soils, often partially sheltered by grasses, rocks, and low-growing vegetation. These environments experience warm summers, cooler winters, and seasonal rainfall, with extended periods of dry conditions. The species is adapted to moderate sunlight and occasional drought, frequently growing close to the ground, where its flattened body provides protection from environmental extremes.
Description:
Gymnocalycium quehlianum is a slow-growing, solitary cactus characterized by its flattened, globular shape and attractive grey-green to olive-green epidermis, occasionally developing bronze or purplish tones under strong sunlight. Mature plants typically reach approximately 1–2" tall and 4–6" in diameter, forming broad, low-growing specimens. The body develops 11–14 rounded ribs divided into prominent, chin-like tubercles. Each areole produces approximately 5–7 short, slightly curved spines, initially brownish before fading to pale grey or whitish tones. Mature plants produce attractive, funnel-shaped flowers approximately 2–2.5" across, displaying creamy white to pale pink petals with a contrasting reddish-pink throat. Flowers emerge near the crown during spring and summer, often appearing repeatedly throughout the growing season. Its symmetrical form, distinctive rib structure, and delicate flowers make it an appealing addition to cactus collections.
Cultivation:
Zone: 9–11; protect from prolonged frost and excessive winter moisture.
Temperature: Optimal growth at 18–28 °C. Maintain winter temperatures above 5 °C for reliable cultivation.
Growth Rate: Slow, gradually developing a broad, flattened, globular body with increasingly prominent ribs and tubercles.
Soil: A highly mineral, fast-draining cactus mixture containing pumice, fine gravel, and a small proportion of organic matter. Excellent drainage is essential for healthy root development.
Watering: Water thoroughly during active growth, allowing the growing medium to dry between waterings. Reduce watering significantly during autumn and keep mostly dry during winter dormancy.
Fertilizing: Apply a diluted, low-nitrogen cactus fertilizer every 2–3 weeks during active growth. Discontinue feeding during winter.
Light: Bright light to partial sun. Gentle morning sunlight encourages compact growth and healthy flowering. Protect from intense afternoon sunlight during extreme heat, particularly for young plants.
Pests and Diseases: Susceptible to mealybugs, root mealybugs, spider mites, scale insects, and root rot associated with excessive moisture or poorly draining growing media.
Germination Info:
Temperature: 27 °C.
Surface Sown: Yes. Sow seeds on the surface of a fine, sterilized cactus growing medium and press lightly into place without burying deeply.
Germination Time: Approximately 7–28 days under favourable conditions, although some seeds may require longer.
Moisture: Maintain consistent surface moisture and high humidity during germination, avoiding waterlogged conditions.
Light: Bright, indirect light. Avoid direct sunlight on covered seed trays.
After Germination: Gradually increase ventilation as seedlings establish. Maintain moderate moisture until young plants develop stronger root systems and begin producing characteristic ribs and spines.
