Family: Rutaceae

Citrus ‘Meyer’, commonly known as Meyer lemon or dwarf lemon, is a small, ornamental citrus tree believed to be a hybrid between a true lemon (Citrus limon) and a mandarin orange (Citrus reticulata). Originally introduced to the United States from China in the early 20th century, Meyer lemons are prized for their slightly sweeter, less acidic fruit compared to standard lemons. The tree is compact, often grown in containers or small gardens, with glossy green leaves, fragrant white blossoms, and bright yellow fruit that can be used for cooking, baking, beverages, and ornamental purposes. Its manageable size and fragrant flowers also make it popular as a decorative plant in homes and landscapes.

While Meyer lemon is widely cultivated and generally well-behaved, it is susceptible to certain pests and diseases, including aphids, citrus scale, and citrus greening, which can affect fruit production and tree health. In Hawaii, it is not considered invasive and does not spread aggressively into natural areas. However, gardeners should practice proper care and monitoring to prevent the introduction of pests or diseases that could impact other citrus or native plants.

High Risk Traits:

• Able to grow in subtropical climates
  
• Some Citrus species are regarded as weeds or invasive
  
• May host pests and pathogens of other Citrus spp.
  
• Exposure to oil may cause dermatitis
  
• Tolerates many soil types
  
• Reproduces by seeds
  
• Dispersed intentionally by people

Low Risk Traits:

• No reports of invasiveness or naturalization
  
• Unarmed
  
• Edible fruit
  
• Requires full sun
  
• Few-seeded
  
• Not reported to spread vegetatively
  
• Reaches maturity in 4+ years
  
• Limited seed production reduces risk of inadvertent dispersal