Saguaro produces its first flowers when it reaches the height of around 7 ft or the age of 30-65 years old. Saguaros are not poisonous to humans and animals but can be harmful because of their sharp solid spines. Winter rain, longer days and cool temperatures of spring, influence saguaro flowering. The flowering of the saguaro begins in mid-April and peaks in late May through early June. When saguaros reach a height of around 7 feet, or once they are 30-65 years old, they enter reproductive age and produce their first flowers. The floral display attracts pollinators easily because of their pungent odour, similar to overripe melons. Bats pollinate the blooms at night, and bees and birds feast on the nectar during the day. About 8 cm large white blooms with golden centers open at night and fade the next day.Įach spring, the giant saguaro cactus displays one of the Sonoran Desert’s most gorgeous flowers. The Carnegia ‘gigantea’ or Giant saguaro cactus white flowers are typically found near the apex of the cactus’ stems and arms. White flowers emerge on the top of the Saguaro cactus
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