The California Barrel Cactus (Ferocactus cylindraceus) is native to the southern California deserts and is the most widespread of the giant barrel cacti. Favoring rocky locations, its shallow roots collect rainwater before it evaporates and, like the Teddy Bear Cholla, it will store water in its core stem. Yellow flowers will appear on the California Barrel Cactus in the spring and early summer while its fruit is bright yellow. 

To see photos of the California Barrel Cactus, visit the San Diego Natural History Museum’s San Diego Plant Atlas.

PHOTO CREDIT: Jeannie Gregory, SDNHM