Barbwire cactus, Dildoe cactus
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Acanthocereus tetragonus
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Cactaceae
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Landscape Uses:
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Primarily recommended for natural landscapes and habitat restorations. Also useful in spiny barrier plantings. |
Ecological Restoration Notes: |
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Generally an uncommon element of coastal hammocks, but occasionally forms dense thickets. |
Availability: |
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Grown by enthusiasts and occasionally by native plant nurseries. Available in Key West at Key West Botanical Garden. |
Description: |
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Medium vinelike spiny shrub, sometimes forming dense thickets. |
Height: |
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Typically 6-8 feet in height, but sometimes climbing higher in other vegetation. |
Growth Rate: |
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Moderate. |
Range: |
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Monroe County Keys north along the coasts to St. Lucie and Lee counties; West Indies, Texas, Mexico, Central America and northern South America. Somewhat sporadic along the South Florida coastline. |
Habitats: |
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Coastal hammocks. |
Soils: |
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Moist, well-drained sandy or limestone soils, with humusy top layer. |
Nutritional Requirements: |
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Moderate; can grow in nutrient poor soils, but needs some organic content to thrive. |
Salt Water Tolerance: |
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Moderate; tolerates brackish water or occasional inundation by salt water. |
Salt Wind Tolerance: |
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High; can tolerate moderate amounts of salt wind without significant injury. |
Drought Tolerance: |
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High; does not require any supplemental water once established. |
Light Requirements: |
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Light shade to moderate shade. |
Flower Color: |
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White. |
Flower Characteristics: |
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Showy; opens at night. |
Flowering Season: |
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All year. |
Fruit: |
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Red, spiny, tubercled berry. |
Wildlife and Ecology: |
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Attracts bat and moth (Sphingidae) pollinators at night. |
Horticultural Notes: |
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Easily grown from seed. It can also be grown from stem cuttings with the base planted about 2" in the ground. |
Comments: |
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Barbwire cactus is heavily armed with spines. It is listed as threatened by the state of Florida. |
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James Johnson, 2014 In habitat, Everglades National Park, Florida
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George D. Gann, 2013 In habitat, northern Colombia
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George D. Gann, 2013 In habitat, northern Colombia
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George D. Gann, 2013 Seedlings in habitat, Everglades National Park, Key Largo, Florida. Often confused with seedlings of Harrisia simpsonii.
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George D. Gann, 2013 In habitat, Everglades National Park, Key Largo, Florida
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George D. Gann, 2013 In habitat, Everglades National Park, Key Largo, Florida
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