Plant Profile

Washingtonia robusta (Washingtonia Palm)

Washington Palm is straight, single-trunked street. The trunk is thinner and taller than W. filifera . The lower leaves persist on the tree after they die, forming a dense, brown, shaggy covering below the living, bright green, broad, fan-shaped leave with hairy filament. These dead fronds are known to be a fire hazard. The stalk of the leaves is very spines and shorter than W. filifera. Washington palm need full sun for best growth, it can tolerate minor frost and it can tolerate more water therefore could be used more in an irrigated landscape.

Landscape Information
Botanical Description
Horticulture Management

By Mmcknight4 (Own work) [Public domain], via Wikimedia Commons

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French Name: Palmier éventail, palmier du Mexique

Pronunciation: wosh-ing-TOE-nee-uh roe-BUS-tuh
Plant type: Palm
Origin: Mexico
Heat Zones: 8 to 16

Hardiness Zones: 9 to 13
Uses: Mass Planting, Container, Edible, Wildlife
Size/Shape

Growth Rate: Moderate

Tree Shape: oval

Canopy Symmetry: Symmetrical

Canopy Density: Open

Canopy Texture: Coarse

Height at Maturity: Over 23

Spread at Maturity: 1.5 to 3 meters

By Mmcknight4 (Own work) [Public domain], via Wikimedia Commons

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Foliage

Leaf Arrangement : Spiral

Leaf Venation: Palmate

Leaf Persistance: Evergreen

Leaf Type: Costapalmate

Leaf Blade: Over 80 cm

Leaf Margins: Entire

Leaf Texture: Rough

Leaf Scent: No Fragance

Color(growing season): Green

Color(changing season): Green
Flower

Flower Showiness: Yes

Flower Size Range: Over 20

Flower Sexuality: Monoecious (Bisexual)

Flower Scent: No Fragance

Flower Color: White

Seasons: Summer
Trunk

Trunk has Crownshaft: No

Trunk Susceptibility to Breakage: Suspected to breakage

Number of Trunks: Single Trunk
Fruit

Fruit Type: Berry

Fruit Showiness: No

Fruit Size Range: 0 - 1.5

Fruit Color: Black

Seasons: Summer

By Mmcknight4 (Own work) [Public domain], via Wikimedia Commons

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Tolerance

Frost Tolerant: No

Heat Tolerance: Yes

Drought Tolerance: Yes

Salt Tolerance: Good
Requirements

Soil Requirements: Clay, Loam, Sand

Soil Ph Requirements: Acidic, Alkaline

Water Requirements: Moderate

Light Requirements: Full, Part
Management

Toxicity: No

Susceptibility to Pests and Diseases: Yes

Mowing Height: 5 - 7 cm

Surface Rooting: No

Life Span: 25-50 years

Edible Parts: Fruit

Pests: Mites, Nematodes

Plant Propagation: Cutting