Washingtonia filifera, also known as desert fan palm, California fan palm or California palm, is a flowering plant in the palm family native to the US. Growing to 15–20 m tall by 3–6 m broad, it is an evergreen monocot with a tree-like growth habit.
California fan palm is one of the most widely grown palms in subtropical climates. California fan palm can grow 60 ft (18.3 m) tall with a crown spread of 15 ft (4.6 m). The massive gray trunk is barrel shaped and ringed with old leaf scars, and may reach over 3 ft (0.9 m) in diameter at its widest point. California fan palm can have up to thirty gray-green palmate (fan-shaped) leaves, each 3-6 ft (0.9-1.8 m) across. Washingtonia filifera is the only palm native to the Western United States and one of the country's largest native palms, exceeded in height only by the Cuban or Florida royal palm. Washingtonia filifera is widely cultivated as an ornamental tree. Washingtonia filifera typically lives from 80 to 250 years or more. The sweet fruit pulp of the fan palm is edible.