FarmVille's Joshua Tree is based on the real-life Yucca brevifolia a plant native to the Mojave Desert (California, Arizona, Utah and Nevada). The name Joshua tree was given by a group of Mormon settlers in the mid-19th century. The tree's unique shape reminded them of a Biblical story in which Joshua reaches his hands up to the sky in prayer. Joshua trees can live for hundreds of years. The tallest trees reach 15 meters (45 feet) tall.