Oreocereus trollii – Old Man of the Andes

Oreocereus trollii - Old Man of the Andes

Oreocereus trollii, commonly called Old Man of the Andes, is a fascinating cactus native to the mountainous regions of Bolivia and northern Argentina. It is cherished for its distinctive woolly hair that covers its body, providing protection against intense sunlight and temperature extremes.

Distinctive Features

• Spines and Hair: Covered densely with white, woolly hairs and sharp spines, creating a striking appearance reminiscent of an old man's beard.
• Flowers: Vivid, tubular red flowers appear during spring and summer, often emerging from the woolly hairs.
• Growth Habit: Columnar cactus that typically grows upright and can form clusters over time.

Care Tips

• Light: Requires full sun to bright indirect sunlight; some protection from intense midday sun is beneficial.
• Water: Water moderately during active growth periods; allow the soil to dry thoroughly between watering sessions and reduce watering significantly during winter dormancy.
• Humidity: Prefers dry conditions typical of indoor or arid climates.
• Temperature: Thrives at temperatures between 15°C and 28°C; can tolerate brief exposure to temperatures near freezing but requires protection from prolonged cold.
• Fertiliser: Fertilise sparingly with diluted cactus fertiliser monthly during the growing season.
• Repotting: Repot every 2-3 years or when the cactus outgrows its current container, using a well-draining cactus soil mix.

Additional Notes

• Ideal for collectors and gardeners seeking visually distinctive cacti.
• Easy-care plant suitable for both novice and experienced enthusiasts.
• Handle gently due to sharp spines concealed by woolly hairs.
• Non-toxic to pets; caution advised due to sharp spines.

Oreocereus trollii offers a unique aesthetic appeal with its woolly covering and vibrant blooms, making it a standout choice for cactus enthusiasts and ornamental displays.