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Saguaro cactus (photo by Wars)
Recognise the saguaro cactus from those old-time cowboy movies? Did you know it can weigh over one ton, creates bird ‘hotels’ and its girth can shrink or swell by 20 to 25 percent?
The cactus is part of the diverse ecosystem of the Sonoran Desert in the American south-west. On Science Friday you can explore the secret life of the Sonoran Desert including 11 Things you didn’t know about the saguaro cactus (Carnegiea gigantea), the icon of the vast 100,000 square mile desert.
Saguaro cactus at Sonoran Desert (photo by Gary M Stoltz US Fish and Wildlife Service)
Saguaro cactus forest (photo by M J Smith)
