Family: Fabaceae

High Risk Traits:

• Elevation range exceeds 1000 m, demonstrating environmental versatility
  
• Reported to be naturalized in many locations (no documented evidence in the Hawaiian Islands to date)
  
• A disturbance-adapted weed with negative impacts to native species diversity and abundance
  
• Other Wisteria species have become invasive
  
• Reported to be toxic to animals and people
  
• Tolerates many soil types
  
• Smother trees and other vegetation
  
• Forms dense thickets
  
• N-fixing (may alter soil chemistry)
  
• Reproduces by seeds and vegetatively
  
• Hybridizes with other Wisteria species
  
• Can be spread by disposed garden waste
  
• Seeds dispersed by water and intentionally by people
  
• Able to resprout after cutting (without treatment of herbicide)

Low Risk Traits:

• Native to temperate climates. Invasiveness may be limited to higher elevation tropical ecosystems
  
• Unarmed (no spines, thorns, or burrs)
  
• Ornamental
  
• Long time to reproductive maturity from seed (20+ years)
  
• Seeds relatively large and unlikely to be spread inadvertently
  
• Reproduces primarily by vegetative means (seed production limited)
  
• Herbicides may provide effective control