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Plant Profile

Roystonea regia (Royal palm)

Notably popular as street or specimen trees, Royal Palms make a neat, tidy, yet stately landscape element for large landscapes, often reaching 25 m in height. It has a tall, smooth, cement grey trunks. Leaves are feather look like, deep green. Flowers are incredibly fragrant, produced periodically throughout the year but mostly in summer. The old leaves should be removed before they drop since they can cause injury or damage to plants or property when allowed to fall. One leaf will fall about every month. Royal Palms grow quite rapidly when given an abundance of water and fertilizer in full sun or dappled shade. They withstand strong winds and salt spray very well It is not really suited for beach side planting as Sabal Palm is.

  • Landscape Information
  • Botanical Description
  • Horticulture Management
  • © Photo by Monika Fabian
  • By Thegreenj (Own work) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
  • Monika Fabian
  • By Ad Meskens (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
© Photo by Monika Fabian

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  • French Name: Palmier royal

    Pronunciation: roy-STOW-nee-uh REE-jee-uh

  • Plant type: Palm

  • Origin: Florida, Cuba

  • Heat Zones: 10 to 16

    Hardiness Zones: 10 to 13

  • Uses: Specimen, Wildlife, Street, Pollution Tolerant / Urban

  • Size/Shape

    Growth Rate: Moderate

    Tree Shape: oval

    Canopy Symmetry: Symmetrical

    Canopy Density: Open

    Canopy Texture: Fine

    Height at Maturity: Over 23

    Spread at Maturity: 3 to 5 meters

  • © Photo by Monika Fabian
  • By Thegreenj (Own work) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
  • Monika Fabian
  • By Ad Meskens (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
© Photo by Monika Fabian

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  • Foliage

    Leaf Arrangement : Alternate

    Leaf Venation: Parallel

    Leaf Persistance: Evergreen

    Leaf Type: Odd Pinnately compund

    Leaf Blade: Over 80 cm

    Leaf Margins: Entire

    Leaf Texture: Glossy

    Leaf Scent: No Fragance

    Color(growing season): Green

    Color(changing season): Green

  • Flower

    Flower Showiness: Yes

    Flower Sexuality: Monoecious (Bisexual)

    Flower Scent: Pleasant

    Flower Color: Yellow

    Seasons: Spring

  • Trunk

    Trunk has Crownshaft: Yes

    Trunk Susceptibility to Breakage: Suspected to breakage

    Number of Trunks: Single Trunk

    Trunk esthetic Values: Showy

  • Fruit

    Fruit Type: Drupe

    Fruit Showiness: Yes

    Fruit Size Range: 0 - 1.5

    Fruit Color: Red, Purple, Black

    Seasons: Spring

  • © Photo by Monika Fabian
  • By Thegreenj (Own work) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
  • Monika Fabian
  • By Ad Meskens (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
© Photo by Monika Fabian

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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: Moderate

    Light Requirements: Full, Part

  • Management

    Toxicity: No

    Susceptibility to Pests and Diseases: Yes

    Mowing Height: 5 - 7 cm

    Surface Rooting: Yes

    Life Span: 25-50 years

    Diseases: Root rot

    Edible Parts: None

    Pests: Nematodes, Thrips

    Plant Propagation: Cutting

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