Are Palm Trees Native to Los Angeles?

Although the palm tree has come to be symbolic of Southern California, the only truly native palm is the California fan palm or Washington palm (Washingtonia filifera). All other varieties were originally imported. Southern California saw a huge surge in palm plantings during the 1920s and 1930s, many of which still line Los Angeles streets today.

Source: Los Angeles A to Z by Leonard & Dale Pitt.