Family: Asteraceae

High Risk Traits:

• Elevation range exceeds 1000 m, and can grow in >5 hardiness zones demonstrating environmental versatility
  
• Possibly naturalized in Massachusetts (or a cultivation escape)
  
• Tolerates many soil types
  
• Seeds dispersed by wind, possibly externally on animals and intentionally by people
  
• Able to reach maturity in <1 year (annual)
  
• Limited or missing ecological information makes accurate risk prediction difficult

Low Risk Traits:

• No documented negative impacts to date
  
• If able to naturalize, may only pose a threat to higher elevation areas in the tropics
  
• Unarmed (no spines, thorns or burrs)
  
• No reports of toxicity or allergens
  
• Beneficial to bees and other pollinators
  
• Ornamental
  
• Not known to form dense stands
  
• Not reported to spread vegetatively