Family: Poaceae

High Risk Traits:

• Broad climate tolerance (tropical/subtropical)
  
• Widely introduced outside native range
  
• Congeneric weed (S. spontaneum)
  
• Host for crop pests/pathogens
  
• Creates fire hazard
  
• Tolerates varied soils
  
• Natural hybridization
  
• Vegetative reproduction (fragmentation)
  
• Wind-dispersed seeds
  
• Regrows after fire or cutting
  
• Generates in ~1 year

Low Risk Traits:

• Not widely naturalized
  
• No spines or thorns
  
• Palatable to grazers
  
• Non-toxic (except horses in excess)
  
• No major human allergies
  
• Not shade tolerant
  
• Low seed viability & no long-term seed bank