Family: Iridaceae

Sisyrinchium rosulatum (annual blue eyed grass, fairy star) is a wildflower native to South America. It is also a common weed of lawns. It is reported to be naturalized in Madagascara and India, as well as the islands of Oʻahu, Maui, Molokai and Hawaiʻi. This plant is self fertile, reported to be toxic to animals, and has small easily spread seeds. These qualities make it a nuisance to get rid of once established.

High Risk Traits:

• Can grow in temperate to subtropical climates (& could invade higher elevation tropical climates)
  
• Naturalized in a number of locations, including the islands of Oʻahu, Maui, Molokai and Hawaiʻi
  
• Controlled as a weed of lawns & golf courses
  
• Other Sisyrinchium species have become weeds
  
• Reported to be toxic to animals
  
• Tolerates shade
  
• Tolerates many soil types
  
• May hybridize with other Sisyrinchium species
  
• Self-compatible
  
• Can reach maturity in one growing season
  
• Small seeds may be accidentally dispersed
  
• Seeds may also be dispersed internally by animals

Low Risk Traits:

• Unarmed (no spines, thorns or burrs)
  
• Ornamental
  
• Not reported to spread vegetatively