The cacti arrive in buckets and cardboard boxes, in truck beds and plastic cups. Some are prickly green knobs smaller than a fist; others are saguaros a few feet tall—miniature versions of the ...

Geologist Jeff Moore was visiting family in Tucson when he got the idea of adapting tools used to measure earthquakes for the study of saguaro cactuses. Studying the inner structure of a cactus ...

Fittingly enough, the future of the saguaro begins in the Old Pueblo. Researchers from the U.S. and Mexico gathered in Tucson earlier this month to launch the largest and most wide-ranging effort yet ...

Fittingly enough, the future of the saguaro begins in the Old Pueblo. Researchers from the U.S. and Mexico gathered in Tucson earlier this month to launch the largest and most wide-ranging effort yet ...

We figured that he was at least 100 years old. Saguaros can grow as tall as 16 feet in a century, and Grandpa was easily four times my size, with about a dozen arms that reached straight up into the ...

Business owners and their signmakers have a powerful botanical in their marketing toolbox. With some green paint, a modicum of skill, and a few quick brush strokes, they can convey a fabled region of ...

Arizona’s iconic saguaro cactuses seem like immobile sentinels standing watch over the Sonoran desert landscape. But beneath their still, spiny exteriors, these towering cactuses are actually ...