Family: Rubiaceae

Origin, Description & Uses:
Hamelia patens, commonly known as firebush, is a tropical to subtropical shrub native to the Americas, ranging from southern Florida and Mexico through Central America and into South America. It is widely valued as an ornamental plant for its bright orange to red tubular flowers, which bloom year-round in warm climates and attract hummingbirds, butterflies, and other pollinators. Firebush typically grows as a multi-stemmed shrub or small tree, reaching up to 10–15 feet tall, with soft, velvety leaves and a fast growth rate. It is commonly used in landscaping for hedges, screens, and wildlife gardens, and has also been used in traditional medicine in parts of its native range.

Risks & Threats:
Although Hamelia patens is not currently known to be naturalized in the Hawaiian Islands, it possesses several traits that raise concern for tropical ecosystems. These include rapid growth, prolific flowering and fruiting, and the ability to attract birds that may disperse its seeds into natural areas. In other tropical and subtropical regions, firebush has shown the ability to escape cultivation and establish outside of managed landscapes. If introduced more widely in Hawai‘i, it could potentially compete with native plants for light, space, and resources. Because of these risks, it is recommended to use caution when planting firebush and to consider low-risk or native alternatives for landscaping, especially near natural areas.

High Risk Traits:

• Known as a garden and disturbance weed (volunteers, invades pastures, roadsides)
  
• Tolerates shade and a wide range of soil conditions (including limestone)
  
• Readily produces viable seed; flowers year-round
  
• Reproduces vegetatively (layering)
  
• Seeds prolifically (~970,000 seeds/kg)
  
• Dispersed intentionally (ornamental) and by birds (fruit eaten, gut survival)
  
• Resprouts after mutilation/freezing

Low Risk Traits:

• No spines, thorns, or burrs
  
• Not parasitic, not toxic to humans (edible fruit, medicinal)
  
• No specialist pollinator required
  
• Not wind-dispersed or produce contaminant
  
• No external dispersal mechanisms