Family: Arecaceae

Origin, Description & Uses
Elaeis guineensis, commonly known as African oil palm, is a large tropical palm native to West and Central Africa. It is a fast-growing tree that can reach 20–30 meters (65–100 feet) tall and produces large clusters of reddish fruits rich in oil. The species is widely cultivated throughout the tropics because it is the world’s most productive source of vegetable oil. Palm oil and palm kernel oil derived from its fruits are used extensively in food products, cosmetics, soaps, biofuels, and industrial goods. Because of its high yields and economic value, African oil palm is planted in large agricultural plantations and sometimes grown as an ornamental palm in tropical landscapes.

Risks & Threats
Although African oil palm is not currently known to be naturalized in the Hawaiian Islands, it possesses several traits that raise concern for tropical island ecosystems. The species grows rapidly, produces abundant fruit, and can be spread by animals that consume and disperse the seeds. In other tropical regions, escaped plants have been documented spreading beyond cultivation and forming dense stands that may compete with native vegetation. If it were to establish in the wild in Hawai‘i, African oil palm could potentially alter habitats, reduce native plant diversity, and contribute to ecosystem changes in forests and disturbed areas. Because of these risks, it is recommended that gardeners, landscapers, and land managers choose low-risk or native alternative palms better suited to protecting Hawai‘i’s unique environments.

High Risk Traits:

• Naturalized elsewhere: Escaped cultivation in the Pacific, South America, the Caribbean, and Florida.
  
• Environmental weed: Invasive in dry Pacific islands and Brazil's Atlantic Forest.
  
• Physical defenses: Petioles armed with sharp, fibrous spines.
  
• Pest/Disease host: Host to numerous serious pests (weevils, beetles) and diseases (rots, wilt).
  
• Allergenic: Pollen is a strong allergen causing severe respiratory issues.
  
• Broad soil tolerance: Thrives in various soils (pH 4-7); tolerates flooding.
  
• Hybridizes: Readily crosses with native South American Elaeis oleifera.
  
• Intentional dispersal: Widely planted as a global oil crop and ornamental.
  
• Effective dispersal: Seeds spread by water, birds, and mammals; survive gut passage.
  
• High fecundity: Produces up to 1,500 fruits per inflorescence.
  
• Seed bank: Forms a persistent seed bank; seeds germinate sporadically over years.
  
• Disturbance-adapted: Fire-resistant; resprouts after cutting; heat stimulates germination.

Low Risk Traits:

• Shade intolerant: Requires full sun; cannot invade closed forests.
  
• No dense thickets: Grows in disturbed areas but does not form impenetrable stands.
  
• Pollinator dependent: Requires specific insects for optimal pollination outside Africa.
  
• Large seeds: Unlikely to be wind-dispersed or accidentally transported.
  
• No vegetative spread: Cannot reproduce from cuttings or fragments.