Family: Myrtaceae

Origin, Description & Uses:
Eucalyptus resinifera, commonly known as red mahogany or kino gum, is a large evergreen tree native to eastern Australia. It typically grows tall with a straight trunk, rough fibrous bark, and glossy green leaves, producing clusters of white flowers that attract pollinators. The tree is valued for its dense, durable hardwood, which is widely used in construction, flooring, and furniture, as well as for windbreaks and reforestation projects. Due to its adaptability and relatively fast growth, it has been planted in tropical and subtropical regions around the world, including Hawaiʻi, where it is now naturalized on Maui.

Risks & Threats:
In Hawaiʻi, Eucalyptus resinifera is naturalized and possesses traits that are cause for concern. Like many eucalyptus species, it can spread beyond planted areas, form dense stands, and compete with native vegetation for light, water, and nutrients. Its leaf litter may alter soil chemistry and reduce the ability of native plants to regenerate, while also increasing fire risk due to the accumulation of flammable material. These characteristics mean it could detrimentally impact fragile tropical island ecosystems if left unmanaged. Because of these risks, it is recommended to choose a low-risk or native alternative for landscaping and forestry projects in Hawaiʻi.

High Risk Traits:

• Naturalized in Hawaiian Islands and New Zealand
  
• Genus has a reputation for naturalizing and invasiveness
  
• Tolerates many soil conditions (and potentially able to exploit many different habitat types)
  
• Shade-tolerant
  
• May hybridize with other Eucalyptus species
  
• Seeds wind-dispersed
  
• Coppices and resprouts following damage from cutting or fires

Low Risk Traits:

• Unarmed (no spines, or thorns)
  
• Landscaping and ornamental value
  
• Will not spread vegetatively