Family: Asteraceae

High Risk Traits:

• Thrives in temperate climates (possibly higher elevations of tropical islands)
  
• Host to white rust
  
• Tolerates many soil conditions (and potentially able to exploit many different habitat types)
  
• Possibly hybridizes with other species
  
• Spreads via rhizomes and seeds
  
• Lack of good information on ecology of seed dispersal makes accurate risk prediction difficult
  
• Described as aggressive and sometimes invasive by gardening website

Low Risk Traits:

• No reports of naturalization elsewhere
  
• Unarmed (no spines, thorns or burrs)
  
• Non-toxic
  
• Landscaping and ornamental value
  
• Reaches maturity in 2-5 years