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Washingtonia robusta

Image of Washingtonia robusta

James H. Schutte

Family

Arecaceae

Botanical Name

Washingtonia robusta

Plant Common Name

Mexican Fan Palm, Washington Fan Palm

General Description

Growing to huge heights, the Washington fan palm is a commonly planted, long tall palm from Mexico. Its trunk is marked with the remains of old leaf bases and has a coarse appearance. Throughout the season is bears broad, showy, fan-shaped leaves of green that emerge from long, sharply toothed petioles. New growth emerges from the terminus of the tree giving plants a feather-duster appearance. In summer it bears clusters of ivory flowers followed by black fruits.

Sun-loving by nature, Washington Fan Palm is tolerant of poor soils and can withstand mild droughts although it appreciates and responds nicely to moist soils. In warm regions it is most often featured as a street or landscape tree. Old, brown leaves persist on trees creating an unkempt, shaggy thatch over time, so it’s best to remove these regularly if possible.

Characteristics

  • AHS Heat Zone

    12 - 8

  • USDA Hardiness Zone

    8 - 15

  • Sunset Zone

    H1, H2, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Palm or Cycad

  • Sun Exposure

    Full Sun

  • Height

    60'-100' / 18.3m - 30.5m

  • Width

    8'-10' / 2.4m - 3.0m

  • Bloom Time

    Early Summer, Summer, Late Summer

  • Native To

    Mexico

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Pollution, Drought, Salt

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Narrow Upright/Fastigiate

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    None

  • Flower Color

    Ivory

  • Fruit Color

    Black

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Green

  • Bark Color

    Brown, Sandy Brown

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Bold

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    Yes

Special Characteristics

  • Bark Texture

    Exfoliating

  • Usage

    Feature Plant, Street Trees

  • Sharp or Has Thorns

    Yes

  • Invasive

    Sometimes

  • Self-Sowing

    Yes