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
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© Photo by Monika Fabian
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By Thegreenj (Own work) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
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Monika Fabian
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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
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French Name: Palmier royal
Pronunciation: roy-STOW-nee-uh REE-jee-uh
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Plant type: Palm
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Origin: Florida, Cuba
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Heat Zones: 10 to 16
Hardiness Zones: 10 to 13
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Uses: Specimen, Wildlife, Street, Pollution Tolerant / Urban
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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
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© Photo by Monika Fabian
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By Thegreenj (Own work) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
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Monika Fabian
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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
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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
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Flower
Flower Sexuality: Monoecious (Bisexual)
Flower Scent: Pleasant
Flower Color: Yellow
Seasons: Spring
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Trunk
Trunk has Crownshaft: Yes
Trunk Susceptibility to Breakage: Suspected to breakage
Number of Trunks: Single Trunk
Trunk esthetic Values: Showy
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Fruit
Fruit Type: Drupe
Fruit Showiness: Yes
Fruit Size Range: 0 - 1.5
Fruit Color: Red, Purple, Black
Seasons: Spring
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© Photo by Monika Fabian
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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
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Tolerance
Heat Tolerance: Yes
Salt Tolerance: Moderate
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Requirements
Soil Requirements: Clay, Loam, Sand
Soil Ph Requirements: Acidic, Neutral
Water Requirements: Moderate
Light Requirements: Full, Part
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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