Wanderlust World Wanderlust World The boojum tree, also called the cirio, is a striking succulent native to the Sonoran Desert. Its range includes parts of the southwestern United States (mainly Arizona and California) and the Baja California peninsula in Mexico—not mainland Mexico as sometimes assumed.
Its tall, columnar trunk stores water, and its sparse, drought-deciduous leaves minimize water loss. The boojum's unusual shape—often likened to an upside-down carrot—makes it an iconic symbol of desert adaptation.
While not currently listed as endangered, habitat loss and climate change pose long-term threats to this slow-growing species.