Botanical Name: Washingtonia robusta
Common Name: Mexican fan palm
Type of Plant: monocot: treelike
Character evergreen
 
Habit of Growth:
Overall Shape an erect, single-trunked palm, becoming very tall and slender as it matures; trunk mostly 1-2' diameter; is not self-cleaning; the old fan-shaped fronds cling to trunk as "shag"
Height 30-80'(100')
Spread 5-10'
Growth Rate rapid
 
Environment:
Exposure outdoors full or partial sun
Soil sandy loam preferred; can tolerate most well-draining soils
Hardiness some frost (zones 8-24); thrives in hot desert areas
 
Morphology:
Leaves fan-shaped fronds; blade is cut nearly to middle, bright glossy green; petiole heavily armed; leaves 4-8' long, 3-4' broad
Flowers creamy white, in long panicles arising between the fronds; spring-summer
Fruit a drupe: black, 1/4"-1/2" diameter
 
Propagation:
seed
 
Usage:
a widely used vertical accent for its form and foliage; good for tropical effects; street or lawn tree; most commonly used fan palm in California
 
Landscape Care:
Watering regular preferred; but tolerates drought after established
Fertilizing little is needed after established
Pruning none, except to remove old leaves or flower stalks
Pests/Diseases relatively free; penicillium wilt in poorly drained soils
Special Conditions/Other
 
Origin: Mexico & Baja California
Family: Arecaceae

Notes:
 
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