Family: Lamiaceae
Origin, Description & Uses
Coleus amboinicus, commonly known as Mexican mint or Spanish thyme, is a fragrant, semi-succulent herb native to parts of eastern and southern Africa, the Arabian Peninsula, and India. This fast-growing plant has thick, fuzzy leaves with a strong oregano-like aroma and is widely cultivated in tropical and subtropical regions. It is commonly grown in home gardens as a culinary and medicinal herb, with leaves used to flavor soups, meats, teas, and traditional remedies for coughs, colds, and digestive issues. Its attractive foliage and ease of growth also make it a popular container and ornamental plant.
Risks & Threats
This species is considered low risk in Hawaiʻi and has not shown significant invasive tendencies in natural ecosystems. While it can spread vegetatively from stem fragments and may occasionally persist around gardens or disturbed sites, it is generally not known to aggressively invade native habitats. As with many cultivated herbs, responsible garden management and proper disposal of plant material are recommended to prevent unwanted spread. Overall, Mexican mint is regarded as a useful and relatively low-risk plant for cultivation in Hawaiʻi.
High Risk Traits:
- Thrives in tropical climates
- Elevation range exceeds 1000 m (environmental versatility)
- Widely naturalized
- An disturbance, or garden weed
- Other Plectranthus species have become invasive
- Spreads vegetatively by plant fragments
- Starts to spread vegetatively in under 1 year
- May rarely produce seeds
Low Risk Traits:
- Rarely produces seeds, and not reported to produce seeds in the Hawaiian Islands
- Requires full sun
- Edible to livestock and people
- Lack of seed production makes long distance and inadvertent dispersal unlikely
