The Washingtonia filifera, commonly known as the California Fan Palm or Desert Fan Palm, is a species of palm native to the southwestern United States and Baja California, Mexico. It’s a medium to large evergreen palm with a tree-like growth habit. 

• Common Names: California Fan Palm, Desert Fan Palm, Petticoat Palm
• Botanical Name: Washingtonia filifera
• Family: Arecaceae
• Native Area: Southwestern United States, Baja California
• Plant Type: Evergreen palm
• Mature Size: 15–20 m (49–66 ft) tall, 3–6 m (10–20 ft) broad
• Sun Exposure: Full sun to partial shade
• Soil Type: Well-drained
• Soil pH: Neutral to slightly acidic
• Bloom Time: Spring
• Flower Color: White, Yellow

Characteristics:

• It has a sturdy, columnar trunk and waxy, fan-shaped leaves.
• The fronds are up to 4 m (13 ft) long with long, thread-like, white fibers.
• When the fronds die, they remain attached and form a “skirt” around the trunk.

Growth and Care:

• This palm is easy to grow and is quite cold-hardy, able to survive short periods at 23ºF (-5ºC).
• It’s drought-tolerant and can live from 80 to 250 years or more.
• Propagation is typically done by seed.

Uses:

• It’s used for ornamental purposes and is an extraordinary accent plant.
• The dead leaves that hang against the trunk give it the nickname “Petticoat Palm”.

The Washingtonia filifera is a remarkable palm that adds a touch of desert beauty to landscapes and gardens. It’s known for its longevity and distinctive appearance, making it a favorite among palm enthusiasts.