North Carolina does not claim to have palm trees. We do have a beautiful tree called “The Flowering Dogwood”. The spring time the white blooms rival the cherry blossoms.
Cornus florida, or flowering dogwood, is a small deciduous tree, and one of the most beautiful of the native American flowering trees. Flowering dogwood has green leaves that turn showy red in the fall and attractive white or pink blossoms that are followed by red fruits. The fruits mature in late summer to early fall and may persist until late in the year. Its attractive branching makes for year-round interest.
The palm tree is interest and pretty in its own way, but it can not compete with the flowering dogwood for pure beauty. There are 2,500 species of palms worldwide, with 11 native to North America. The largest of these, and the only palm tree native to western North America, is the California fan palm. It is also known as the desert palm and the California Washingtonia. It should not be confused with the date palm.
This palm tree requires a specific environment. As far as I know San Francisco does not present a favorable environment for the palm tree.
Washington Street Palms in San Francisco