Family: Myrtaceae

High Risk Traits:

• Broad climate versatility (hardiness zones 8B–11; tolerates salt, frost, and poor soils)
  
• Repeated introductions outside native range
  
• Congeneric weeds present (other Eucalyptus species are documented weeds)
  
• Unpalatable to grazing animals
  
• Host for specialized pests (e.g., psyllid Ctenarytaina eucalypti)
  
• Creates fire hazard (genus-level flammability)
  
• Tolerates wide range of soil types
  
• Self-compatible
  
• Reproduces vegetatively via lignotuber
  
• Propagules dispersed intentionally by people and by wind
  
• Prolific seed production
  
• Tolerates mutilation, fire, and coppicing

Low Risk Traits:

• No evidence of naturalization or weediness
  
• No spines, thorns, or burrs
  
• No evidence of allelopathy, toxicity, or parasitism
  
• Not shade tolerant
  
• No persistent seed bank (seeds viable <1 year)
  
• No evidence of water, bird, or animal dispersal