“One or two years of low blooming I don’t think is cause for alarm,” Dimmitt said. Don Swann, biologist with the National Park Service, left, and Gabe León with American Conservation Experience, take ...

While the Grand Canyon may be Arizona’s best-known national park, it’s not the only one worth a visit. With 22 National Park ...

You might have noticed our beloved saguaros have been sporting new hairdos lately. No, they're not growing baby avocados at the crown of their heads. These bulbous green nubs are the buds that bloom ...

Cactuses sure give Arizonans a lot to talk about. From towering Saguaros that are not what they look like, to a cactus looking like a couple kissing, to stunning flowers that bloom en mass for only ...

This is a preview. Log in through your library . Abstract PREMISE OF THE STUDY:Phenology is the study of biological life cycle events, such as flowering and migration. Climate patterns can alter these ...

Tanisha Tucker Lohse, of the Tohono Oʼodham Nation, picks a ripe saguaro cactus fruit during a harvest day in Saguaro National Park near Tucson, Arizona, this June. Credit: Ross D. Franklin/AP Photo ...

While the Grand Canyon may be Arizona’s most well-known national park, it’s not the only one worth a visit. With 22 total National Park Service monuments, parks, recreation areas, historic sites, and ...

Each side of Saguaro National Park offers a visitor center with restrooms and watering stations. Visitors will find maps, Junior Ranger booklets and rangers to ask questions. Each visitor center ...

TUCSON, Ariz. (CN) — For thousands of years, one plant has served as the sentinel of the Sonoran Desert. Thriving through three distinct biomes and migrating north from Mexico over several million ...

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 ...