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Plant Profile

Archontophoenix alexandrae (Alexandra Palm)

Archontophoenix alexandrae is a tall palm, about 25 metres tall with a spread of about 2 meters. The leaves have a tendency to rotate 90 degrees to expose the whole leaf in profile, The base of the petioles form a bright breen crownshaft that the leaves rarely droop below. The trunk is smooth and ringed with noticible leaf scars and the base can be noticibly swollen. Flowers are creamy flower stalks holding amythest purple flowers. The round fruit turn bright red at maturity. They do like more water than most palms, with some even thriving in poorly drained areas. It is quite a fast grower, averaging about 1/3 - 1 meter per year.

  • Landscape Information
  • Botanical Description
  • Horticulture Management
  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Kahuroa (Own work) [Public domain], via Wikimedia Commons

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  • French Name: Palmier royal

    Pronunciation: ar-kawn-toe-FEE-nicks al-leck-SAN-dree

  • Plant type: Palm

  • Origin: Australia

  • Heat Zones: 1 to 12

    Hardiness Zones: 10 to 11

  • Uses: Specimen, Mass Planting, Indoor, Container, Pollution Tolerant / Urban

  • Size/Shape

    Growth Rate: Fast

    Tree Shape: Palm

    Canopy Symmetry: Symmetrical

    Canopy Density: Open

    Canopy Texture: Fine

    Height at Maturity: 5 to 8 m

    Spread at Maturity: 3 to 5 meters

  • Notes

    Alexandra palm is a popular landscape specimen but is difficult to transplant; the bud must be protected when moving 

  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Kahuroa (Own work) [Public domain], via Wikimedia Commons

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  • Foliage

    Leaf Arrangement : Spiral

    Leaf Venation: Parallel

    Leaf Persistance: Evergreen

    Leaf Type: Odd Pinnately compund

    Leaf Blade: Over 80 cm

    Leaf Shape: Linear

    Leaf Margins: Entire

    Leaf Texture: Leathery, Fine

    Leaf Scent: No Fragance

    Color(growing season): Green

    Color(changing season): Green

  • Flower

    Flower Showiness: Yes

    Flower Size Range: 10 - 20

    Flower Type: Spike

    Flower Sexuality: Monoecious (Bisexual)

    Flower Scent: No Fragance

    Flower Color: Yellow, White

    Seasons: Summer

  • Trunk

    Trunk has Crownshaft: Yes

    Trunk Susceptibility to Breakage: Suspected to breakage

    Number of Trunks: Single Trunk

    Trunk esthetic Values: Smooth, Colored

  • Fruit

    Fruit Type: Berry

    Fruit Showiness: Yes

    Fruit Size Range: 1.5 - 3

    Fruit Color: Red

    Seasons: Summer

  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Dave Kimble (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Kahuroa (Own work) [Public domain], via Wikimedia Commons

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  • Tolerance

    Frost Tolerant: No

    Heat Tolerance: Yes

    Drought Tolerance: No

    Salt Tolerance: Moderate

  • Requirements

    Soil Requirements: Clay, Loam, Sand

    Soil Ph Requirements: Acidic, Neutral

    Water Requirements: High

    Light Requirements: Full, Part

  • Management

    Toxicity: No

    Invasive Potential: No

    Susceptibility to Pests and Diseases: No

    Pruning Requirements: No pruning at all

    Fruit/ Leaves/ Flowers litter: No

    Surface Rooting: No

    Life Span: 25-50 years

    Plant Propagation: Seed

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