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Old Man of the Mountain
Scientific Name: Oreocereus trollii Kupper
Synonym: Cereus trollii, Borzicactus trollii, Oreocereus bruennowii, Oreocereus celsianus var. bruennowii, Oreocereus irigoyenii
Family: Cactaceae

Show Larger Picture Oreocereus trollii

Recommended Temperature Zone: USDA: 7-11 Frost Tolerance: Hardy in Phoenix to 20°F (-7°C) Minimum Avg. Temperature: 50°F (10°C) Heat Tolerance: Need protection from the afternoon sun in summer in Phoenix Sun Exposure: Full sun Origin: Mountains of Argentina and southern Bolivia Growth Habits: Columnar cactus, slowly clumping, 2 feet tall (60 cm) Watering Needs: Light water, rot easily in winter Propagation: Seeds, cuttings are very hard to root

Blooming Habits:
Red flowers, 1.5 inches in diameter (4 cm)