Family: Calophyllaceae
Origin, Description & Uses
Mesua ferrea (commonly known as Ceylon ironwood or Indian rose chestnut) is native to the Indian Subcontinent and extends through parts of Indo-China and western to central Malesia. It is a slow-growing, long-lived evergreen tree valued for its exceptionally dense, heavy timber—so hard it is often called “ironwood.” The tree has glossy, dark green leaves and attractive, fragrant white flowers with bright yellow stamens. It is widely planted as an ornamental shade tree in tropical and subtropical regions. Beyond landscaping, it also has a long history of use in traditional medicine, and its durable wood is used for construction, tools, and specialty items.
Risks & Threats
Mesua ferrea is generally considered a low-risk species in tropical island settings and is not known to be invasive in Hawaiʻi. It tends to grow slowly and does not typically spread aggressively or form dense naturalized populations. While it produces seeds that could potentially be dispersed by wildlife, there is currently little evidence of it escaping cultivation or significantly impacting native ecosystems. However, as with any long-lived ornamental tree, it should still be planted thoughtfully in appropriate locations, with preference given to native or other low-risk species when possible to support healthy, resilient island ecosystems.
High Risk Traits:
- Escaped and locally naturalized in China
- Thrives in tropical climates
- Elevation range to 2300 m
- Shade-tolerant
- Tolerates many soil conditions (and potentially able to exploit many different habitat types)
- Seeds explosively dispersed
- Tree coppices in drier conditions
Low Risk Traits:
- Despite ability to spread, no negative impacts have been documented
- Unarmed
- Fodder tree (seed meal)
- Non-toxic
- Landscaping and ornamental value
- Timber tree
- Medicinal properties
- Reaches reproductive maturity in 15-20 years
- Seeds lose viability rapidly (2-3 months)
