Trichocereus pasacana (Old Argentine Saguaro Cactus)

Trichocereus pasacana, commonly known as the Old Argentine Saguaro Cactus, is a large cactus species native to the high mountains of Argentina. It has a columnar shape with multiple branches that grow upright and can reach a height of up to 30 feet. The stems are covered in spines and have a bluish-green color. This cactus produces beautiful white flowers that bloom at night and attract nocturnal pollinators.