Pack Size: 20, 100, 300
Year: 2026
Accepted Scientific Name: Glandulicactus mathssonii (A.Berger ex K.Schum.) D.J.Ferguson
Synonyms: Ferocactus mathssonii, Ancistrocactus mathssonii, Echinocactus mathssonii
Alternative Classification: Associated with the Sclerocactus uncinatus–crassihamatus complex.
Origin and Habitat:
Glandulicactus mathssonii is a distinctive fishhook cactus associated with the Chihuahuan Desert region of northern Mexico. It inhabits dry desert hillsides, rocky flats, open grasslands, and limestone-rich slopes, where plants grow in shallow, mineral-rich soils with excellent drainage. Specimens are frequently found among grasses, low shrubs, and scattered rocks, which provide partial shelter from intense sunlight. Its natural environment experiences hot summers, cool winters, seasonal rainfall, and prolonged dry periods. The species is adapted to challenging desert conditions, developing a compact body and prominent hooked spines. Its unusual spination and attractive copper-coloured flowers make it particularly desirable among specialist cactus collectors.
Description:
Glandulicactus mathssonii is a slow-growing, predominantly solitary cactus characterized by its globular to short cylindrical shape and distinctive hooked central spines. Mature plants typically reach approximately 3–6" tall and 2–3.5" in diameter, occasionally producing basal offsets with age. The green to bluish-green stem develops approximately 9–13 prominent ribs divided into rounded tubercles. Each areole produces several slender radial spines, ranging from pale grey to reddish-brown, accompanied by stronger central spines that are often flattened, dark brown, and sharply hooked. Mature plants produce attractive, funnel-shaped flowers approximately 1–1.5" across, displaying unusual coppery-brown, reddish-purple, maroon, or dark bronze tones. Flowers emerge near the crown during spring, followed by small fruits containing numerous dark seeds. Its formidable hooked spines and distinctive metallic-coloured flowers make it a desirable addition to specialist cactus collections.
Cultivation:
Zone: 9–11; protect from prolonged freezing and excessive winter moisture.
Temperature: Optimal growth at 18–30 °C. Maintain winter temperatures around 5–10 °C under dry conditions.
Growth Rate: Slow, gradually developing a globular to short cylindrical body with prominent tubercles and strongly hooked central spines.
Soil: A highly mineral, fast-draining cactus mixture containing pumice, fine gravel, crushed limestone, and a small proportion of organic matter. Excellent drainage and root aeration are essential.
Watering: Water moderately during active growth, allowing the growing medium to dry thoroughly between waterings. Reduce watering significantly during autumn and maintain mostly dry conditions during winter dormancy.
Fertilizing: Apply a diluted, low-nitrogen cactus fertilizer every 2–3 weeks during active growth. Discontinue feeding during winter.
Light: Full sun to bright, filtered sunlight. Strong light encourages compact growth, healthy spination, and flowering. Protect young plants from intense afternoon sunlight.
Pests and Diseases: Susceptible to mealybugs, root mealybugs, spider mites, scale insects, and root rot associated with excessive moisture.
Germination Info:
Temperature: 27 °C.
Surface Sown: No. Sow seeds on a fine, sterilized cactus growing medium and cover lightly with fine mineral material.
Germination Time: Variable, approximately 14–60 days under favourable conditions. Some seeds may require considerably longer.
Moisture: Maintain consistent but moderate moisture during germination, avoiding saturated conditions.
Light: Bright, indirect light. Avoid direct sunlight on covered seed trays.
Dormancy: Germination may be irregular. Some seed batches may benefit from alternating temperatures or cool stratification.
After Germination: Gradually increase ventilation as seedlings establish. Maintain moderate moisture while young plants develop stronger root systems, then progressively introduce drier conditions and brighter light.
