Echinopsis thelegona
Scientific Name: Echinopsis thelegona (F. A. C. Weber) Friedrich & G. D. Rowley
Synonym: Cereus thelegonus, Trichocereus thelegonus
Family: Cactaceae
Trichocereus thelegonus at the Huntington Gardens in early July
USDA: 9b-11
Frost Tolerance: Takes some limited frost
Heat Tolerance: Afternoon shade in very hot climate
Sun Exposure: Full sun
Origin: Argentina
Growth Habits: Bushy columnar cactus, branching freely, semi erect or sprawling, dark green stems up to 4 feet long (1.2 m), up to 3 inches in diameter(7.5 cm); about 12 broad ribs; areoles 0.5 inch apart (1.2 cm); 1 central, up to 1.6 inches long (4 cm); 6 radials, 0.5 to 0.8 inch long (1.2-2 cm).
Propagation: Cuttings, seeds
Picture from K. Schumann "Gesamtbeschreibung der Kakteen"
Blooming Habits:
Echinopsis thelegona has white nocturnal funnel-shaped flowers in summer, about 8 inches long (20 cm). The fruit is red, hairy, about 2 inches long (5 cm) When ripe, it splits on one side, revealing black seeds.
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