Hercules’-club
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Zanthoxylum clava-herculis
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Rutaceae
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Landscape Uses:
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Primarily recommended for natural landscapes and habitat restorations. |
Ecological Restoration Notes: |
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Availability: |
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Grown by enthusiasts and occasionally by native plant nurseries. |
Description: |
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Small to medium tree or large shrub with a rounded, spreading crown. Trunks short to 18 inches in diameter, but usually much less. Bark light gray, roughened by numerous cone-like warts bearing long, sharp brown spines. Leaves temperate deciduous, compound, aromatic, shiny green above, to about 8 inches in length. |
Height: |
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Typically 10-20 feet in height in South Florida; to 65 feet in Florida. Often as broad as tall. |
Growth Rate: |
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Moderate. |
Range: |
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Southeastern United States west to Texas and south to Miami-Dade and Lee counties. Very rare in Broward County; known only from the area in and around Hugh Taylor Birch State Park. Also rare in Miami-Dade County, where confined to barrier islands and sandy areas north of the Miami River. For a digitized image of Elbert Little's Florida range map, visit the Exploring Florida website. Little's map exagerates the range of this inland in southeastern Florida. |
Habitats: |
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Hammocks and coastal thickets. |
Soils: |
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Moist, well-drained sandy soils, with humusy top layer. |
Nutritional Requirements: |
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Moderate to low; it prefers soils with organic content, but will still grow reasonably well in nutrient poor soils. |
Salt Water Tolerance: |
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Low; does not tolerate long-term flooding by salt or brackish water. |
Salt Wind Tolerance: |
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Moderate; grows near salt water, but is protected from direct salt spray by other vegetation. |
Drought Tolerance: |
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High; does not require any supplemental water once established. |
Light Requirements: |
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Full sun to light shade. |
Flower Color: |
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Greenish-yellow. |
Flower Characteristics: |
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Inconspicuous. Flowers unisexual. |
Flowering Season: |
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Spring-summer. |
Fruit: |
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Small subglobose glandular-punctate follicles. |
Wildlife and Ecology: |
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Provides moderate amounts of food and cover for wildlife. Larval host plant for giant swallowtail (Papilio cresphontes) butterflies. |
Horticultural Notes: |
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Can be grown from seed removed from the outer coating. Scatter seeds over soil and barely cover. |
Comments: |
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Spiny. |
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