Family: Asparagaceae

High Risk Traits:

• Able to grow in 6 hardiness zones, demonstrating environmental versatility
  
• Grows in tropical climates
  
• Naturalized in several European countries (no evidence in Hawaiian Islands to date)
  
• Controlled as a weed in Europe (potential environmental weed)
  
• Other Yucca species are invasive
  
• Spine-tipped leaves
  
• Unpalatable to deer and potentially other grazing animals
  
• Potentially toxic and irritant to animals and people
  
• Tolerates many soil types
  
• Reproduces by seeds and vegetatively by clonal spread through rhizomes
  
• Self-compatible
  
• Spread vegetatively through garden waste
  
• Seeds dispersed intentionally by people
  
• Able to resprout after cutting

Low Risk Traits:

• Ornamental
  
• Requires specialized pollination (obligate pollination mutualism with moths in the genera Tegeticula and Parategeticula)
  
• Fruit and seed production may be limited in cultivation
  
• Fruit and seed dispersal may be limited