As wild burro populations grow, they're putting native vegetation at risk, a new study shows, including the saguaro cactus.

Cactuses are an integral part of the Arizona landscape — especially the tall saguaros that tower over swaths of the desert. Each year in the late spring, white blossoms emerge in the desert, crowning ...

An usually wet September and October has greened up Arizona's outdoors, but La Niña could erase some of the gains.

This is a preview. Log in through your library . Abstract Ephemeral plant biomass and density on a Sonoran Desert hill near Cave Creek, Arizona, vary relative to shrub canopy type and shrub density.

Plants are flowering at higher elevations along trails in Arizona's Santa Catalina Mountains, according to new research. Individual plant species respond differently to a warming climate. An analysis ...

Across Arizona, gardeners are rediscovering the joy of growing Christmas cacti that burst into color just in time for ...

Stinknet, an invasive plant species from South Africa with carrot-like leaves and yellow ball-like flowers, has been spotted growing in Saguaro National Park in southern Arizona, officials said. Alden ...