Aruba, silhouette of palm tree and palapa on metal tree decoration

AssetID: 119704200 / {Daniel Grill} / Aruba, silhouette of palm tree and palapa on The saguaro ( / s ə ˈ w ɑr oʊ / ; scientific name Carnegiea gigantea ) is a large, tree -sized cactus species in the monotypic genus Carnegiea . It is native to the Sonoran Desert in the U.S. state of Arizona , the Mexican state of Sonora , a small part of Baja California in the San Felipe Desert and an extremely small area of California , U.S. The saguaro blossom is the State Wildflower of Arizona. The common name saguaro came into the English language through the Spanish language , originating in the O'odham language . This page is not affiliated with, or endorsed by, anyone associated with the topic.