The drive from Riverside, California to Phoenix, Arizona is affectionately known as the Cactus Trail. The prickly pear cactus is the most common cactus variety in this area, with other cactu... Read allThe drive from Riverside, California to Phoenix, Arizona is affectionately known as the Cactus Trail. The prickly pear cactus is the most common cactus variety in this area, with other cactus varieties being the saguaro - the flower from which is Arizona's state flower - and the ... Read allThe drive from Riverside, California to Phoenix, Arizona is affectionately known as the Cactus Trail. The prickly pear cactus is the most common cactus variety in this area, with other cactus varieties being the saguaro - the flower from which is Arizona's state flower - and the organ pipe. Other noted plants species in the area include the slow growing Joshua tree (w... Read all