Family: Amaryllidaceae

High Risk Traits:

• Able to grow in a broad range of climates, from temperate to subtropical
  
• Widely planted and naturalized (native range unknown)
  
• Regarded as a minor weed in certain settings
  
• Other Allium species have become invasive
  
• Potentially toxic to animals and humans at higher dosages
  
• Unpalatable to grazing animals
  
• Geophyte (able to persist from bulbs)
  
• Able to spread vegetatively
  
• Cultivated as an annual
  
• Poorly controlled by several herbicides

Low Risk Traits:

• Highly domesticated and cultivated for a long period of time as a food crop
  
• Prefers a cooler climate (may only be able to persist at higher elevations in tropical regions)
  
• Unarmed (no spines, thorns or burrs)
  
• Shade-intolerant
  
• Does not do well on acidic soils
  
• Fruits are abortive and no seeds are produced (although seed producing cultivars are being evaluated)
  
• Lack of seed production makes accidental dispersal unlikely