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Trichocereus atacamensis, known as "cardón" or "pasacana" is a cactus species characteristic of northwestern Argentina.
Its cylindrical trunk can reach 50 cm in diameter, and up to 15 m in height forming candelabra-like branches, with thorns up to 15 cm long. It is a plant of high longevity, but of slow growth. A 10 m tall cardón can be around 180 years old. It grows on rocky slopes and plains, withstanding extreme conditions of cold and aridity at an altitude between 2,000 and 3,500 meters.
Its structural tissue hardens when it dries, from which is obtained what is known as cardón wood, traditionally used in construction, especially for the beams and roof trusses.
At present, the cardón is a protected species. It is forbidden to cut it, and only the production of handicrafts with fallen or dried specimens is authorized.
Flowers of cardón are yellowish white. The fruit is sweet and is used in the elaboration of jams or syrups.