organpipe cactus Cactaceae Stenocereus thurberi (Engelm.) Buxbaum Listen to the Latin symbol: STTH3 Other Fact Sheets
Leaf: Reduced to a dark spine, central spine(s) up to 2 inches and lateral spines 1/2 inch, displayed in vertical rows along the bark ridges, areole clusters of 10-14 spines less than 1 inch apart.
Flower: Attractive, white to purple (with white edges), 3 inches across, blooming at night during early summer, persisting for less than 24 hours, appearing at the branch tips.
Fruit: A nearly round berry, densely thorny, 1 1/2 inches, green ripening to red.
Bark: A green, leathery thick skin with 12-17 prominent vertical ridges.
Form: Clustered, unbranched column-like branches sweeping upward from a central point, to 20 feet tall, clumps to 15 feet wide, individual stems approximately 6-8 inches in diameter.

Looks like: Andes organ pipe - senita cactus
leaf bark form1 map
Additional Range Information:
Stenocereus thurberi is native to North America.
Range may be expanded by planting.
See states reporting organpipe cactus.
External Links:
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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