Family: Crassulaceae

High Risk Traits:

• Naturalized and invasive in regions with tropical climates
  
• Naturalized on Kauai, Oahu, Lanai, Maui, and Hawaii islands and elsewhere throughout the tropics
  
• Regarded as a garden and landscaping weed (but also valued as an ornamental)
  
• Environmental weed
  
• Other Kalanchoe species are invasive
  
• Allelopathic
  
• Unpalatable
  
• Toxic to animals and people
  
• Tolerates many soil types
  
• Able to form dense stands that exclude other vegetation
  
• Reproduces by seeds and vegetatively from plantlets
  
• Hybridizes with other Kalanchoe species
  
• Self-compatible
  
• Capable of reproducing in one year
  
• Seeds dispersed by wind
  
• Dispersed intentionally by people
  
• Prolific seed production
  
• Seeds may form a persistent seed bank (longevity unknown)
  
• Able to resprout after damage or mowing

Low Risk Traits:

• Unarmed (no spines, thorns, or burrs)
  
• Ornamental value
  
• Herbicides may provide effective control