Family: Asteraceae

Origin, Description & Uses:
Thymophylla tenuiloba, known as Dahlberg’s daisy or golden fleece, is a small annual native to the southwestern United States and Mexico. It is widely grown as an ornamental for its bright yellow, daisy-like flowers, fine-textured foliage, and long blooming season. This drought-tolerant plant is popular in sunny gardens, borders, and containers due to its low maintenance needs.

Risks & Threats:
This species is naturalized on Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Kahoʻolawe, and Maui, and may be spreading on Hawaiʻi Island. It has traits that are cause for concern, including the ability to reseed and spread into disturbed areas, where it may compete with native plants. As a result, it could negatively impact tropical island ecosystems. It is recommended to choose a low-risk or native alternative for landscaping.

High Risk Traits:

• Can grow in tropical climates
  
• Naturalized in Hawaiian Islands, (Kauai, Oahu, Molokai, Maui, and Kahoolawe, Lanai) and elsewhere
  
• Can become aggressive and weedy in garden settings
  
• Other Thymophylla and Dyssodia species have become invasive
  
• Grows on many soil types
  
• Reproduces by wind-dispersed seeds
  
• Dispersed by people
  
• May be apomictic
  
• Reached maturity in one year (annual) but may persist for several years in areas with a conducive climate
  
• May be accidentally dispersed along roads and heavily travelled corridors

Low Risk Traits:

• Unarmed (no spines, thorns or burrs)
  
• Palatable to deer
  
• Landscaping and ornamental value