Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Fan palm (Washingtonia filifera) is a tree in the Palm family (Arecaceae). Commonly called desert fan palm or California fan palm, it is the only palm native to the western United States and is the country's largest native palm. It is an evergreen monocot with large sprays of creamy white flowers, up to 15 feet (5 meters) long, appear in summer, followed by abundant clusters of small, pea-sized black fruits.

Primarily found in Creosote Bush Scrub and Desert Riparian habitats such as rivers, seeps and springs, this palm is a keystone species in Desert Oases, and supports desert species of wildlife, such as the Western Yellow Bat, the Hooded Oriole and the Palm Flower Moth. 

Although Fan Palm grows near springs, it is actually quite drought-adapted in gardens. Place in well-drained soil in full sun. It is not necessary to prune dead leaves; however, this can be done by cutting them off close to the trunk. Remove these carefully in order to protect any bats or birds that may get crushed by the heavy leaves.

Plant type

Tree

Size

49 - 66 ft Tall
10 - 15 ft Wide

Form

Upright Columnar

Growth rate

Moderate

Dormancy

Evergreen

Calscape icon
Color

White, Yellow

Flowering season

Winter, Spring

Special uses

Deer resistant

Sun

Full Sun

Water

Low, Moderate

Summer irrigation

Max 1x / month once established

Ease of care

Easy

Cold tolerance

Tolerates cold to 14° F

Soil drainage

Fast

Soil description

Prefers well drained soils, suseptible to root rot in excessively wet soils.
Soil PH: 6.1 - 9.2

Maintenance

Periodically remove dead leaves, which form a skirt

Propagation

For propagating by seed: No treatment.

Sunset Zones

8*, 9*, 10, 11*, 12*, 13*, 14*, 15*, 16*, 17, 18*, 19*, 20*, 21*, 22*, 23*, 24

Site type

Moist places

Plant communities

Creosote Bush Scrub, Wetland-Riparian

Use with other desert trees and shrubs such as Desert Agave (Agave deserti), Elephant Tree (Bursera microphylla), Desert Lavender (Condea emoryi), Brittlebush (Encelia farinosa or actonii), Barrel Cactus (Ferocactus cylindraceus), Ocotillo (Fouquieria splendens), Chuparosa (Justicia californica), Beavertail Cactus (Opuntia basilaris), Palo Verde (Parkinsonia spp.), Smoketree (Psorothamnus spinosus), Joshua Tree (Yucca brevifolia), and Mojave Yucca (Yucca shidigera).

Bats
Birds
Caterpillars
Butterflies

Butterflies and moths supported

1 confirmed and 0 likely

Confirmed Likely

Palm Flower Moth

Litoprosopus coachella