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Sabal causiarum

Puerto Rican hat palm

Majestic, tree with huge leaves and husky trunk delivers unsurpassed tropical look. Among the largest of hardy fan palms.

Height12–30ft
Width15–25ft
ToleratesCoast, Cold, Heat, Salt
Water needsModerate

Young plants need ample irrigation to get established. Older plants, especially in heavier soils, are less thirsty. Prefers good drainage.

Hardy to17°F
ExposurePart Sun – Full Sun
Plant traitsColumnar, Foliage Feature, Palm, Rosette, Sculptural, Solitary, Tree, Tropical, Trunking
Indoor / outdoorOutdoor
DrainageIn Ground: Cactus Mix, In Pots: Cactus Mix
FertilizingAll Purpose
OriginPuerto Rico, Hispaniola
California nativeNo
Sunset zones8, 9, 11–24

Growing Notes

Tolerates coastal conditions in Southern California, as well as desert climates. Slower in the fog belt.

Special Interest

Very large leaves on this slow-growing palm tree make a dramatic impact in the garden space for many years, gradually become an equally dramatic canopy. Smooth, concrete-like trunk can become very thick, up to two feet in diameter. Unarmed: no spines.

Stories featuring this plant

The above information reflects the observations of Grubb and Nadler and our extended plant community. We always consider input from fellow horticulturists and welcome feedback from those with additional information on the culture of this plant.

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