Form: Palm tree.
Leaf retention: Evergreen.
Growth rate: Very slow.
Mature Size: 30-50' high and 10' wide.
Flowers: Spectacular, pale yellow to white, fragrant, clustered in large, long, drooping plumes.
Fruit: Green, turning to yellow and then reddish-brown, round, 3/4" diameter, tough, edible
but not tasty.
Leaves: Blue-gray to blue-green, wide, fan-shaped. The fronds remain attractive for several years.
They can be removed from the trunk entirely when they die, resulting in an attractive, ringed,
Stems: Thorns on leaf stems. Trunks grow to 2' in diameter.
Wildlife: Attracts insects.
Toxic / Danger: Thorns on leaf stems.
Origin: Baja California, Mexico.
Cultivation and Uses
USDA hardiness zones: 8b-11. Hardy to 15°F.
Sunset climate zones: 10, 12-17, 19-24.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade. Full sun intensifies the blue color in the leaves.
Water after becoming established: Monthly. Supplemental water speeds growth.
Soil: Well drained, dry, low organic content.
Fertilize: Fertilization speeds growth and is only necessary with nutrient
deficiency. Look for 10-5-10 to 20-5-20 (N-P-K) fertilizer that also includes
the micronutrients magnesium (Mg), manganese (Mn) and iron (Fe). Apply mid-spring
after one year in the ground. Do not over-fertilize. Apply under the canopy
but away from the trunk.
Prune: Cut off dead fronds when they have folded down to the trunk, making it easier
to remove the base of the frond and leave a bare trunk.
Litter: Moderate: flower, fruit, fronds.
Propagation: Seed, pre-soaked for 24 hours in fresh water. Germination time is erratic
and can take months.
Other common names are Mexican Blue Fan Palm and Blue Hesper Palm. Accepts windy locations.
This is not the same plant as the Mexican Fan Palm (Washingtonia robusta).
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