Family: Rosaceae

High Risk Traits:

• Elevation range exceeds 1000 m, demonstrating environmental versatility
  
• Can grow in higher elevations with subtropical climates
  
• Naturalized on Kauai and Hawaii (Hawaiian Islands), parts of the continental US, Australia, New Zealand
  
• Environmental weed in Australia
  
• Other Pyracantha species are invasive
  
• Spiny
  
• Host of bacterial fireblight
  
• Tolerates many soil types
  
• Forms dense stands that exclude other vegetation
  
• Reproduces by seeds
  
• Seeds dispersed by birds, water, dumped garden waste & intentionally by people
  
• Prolific seed production (densities unknown)
  
• Able to resprout after fire

Low Risk Traits:

• Invasiveness may be restricted to higher elevation of islands with tropical/subtropical climates
  
• Despite invasiveness, valued by some as an ornamental
  
• Requires full to partial sun to grow (dense shade may impede spread)
  
• Herbicides may provide effective control