Family: Myrtaceae

Origin, Description & Uses
Eucalyptus yarraensis, commonly known as yarra gum, is a medium to tall tree native to southeastern Australia. It typically grows in forested and hilly regions, developing a straight trunk with rough, fibrous bark at the base and smoother bark above. The leaves are glossy green and lance-shaped, and like many eucalyptus species, the tree produces small white flowers that attract pollinators. Yarra gum is valued for its timber, which can be used in construction, fencing, and fuelwood. It is also planted in some regions as an ornamental or for windbreaks due to its relatively fast growth and adaptability.

Risks & Threats
Eucalyptus yarraensis is considered low risk and has not shown strong invasive tendencies in Hawaiʻi or elsewhere. It does not typically spread aggressively or form dense stands that displace native vegetation. However, as with other eucalyptus species, it may contribute to increased fire risk in dry conditions due to its oil-rich leaves and bark. While it can naturalize in some environments, there is little evidence that it poses significant ecological threats. With proper management and site selection, yarra gum can be used without major concern for environmental impact.

High Risk Traits:

• Congeneric weeds exist (other Eucalyptus species are weedy)
  
• Cyanogenic – unpalatable and toxic to animals
  
• Intentionally sold as an ornamental
  
• Seeds adapted for wind dispersal
  
• Able to coppice after disturbance

Low Risk Traits:

• No history of naturalization or weediness
  
• Not suited to tropical or subtropical climates
  
• Narrow soil tolerance (heavy clay only)
  
• No spines, thorns, or burrs
  
• No vegetative fragmentation
  
• No adaptations for animal or accidental dispersal