Family: Myrtaceae
High Risk Traits:
- Broad climate suitability
- Grows, and spreads, in regions with tropical climates
- Naturalized on Kauai, Oahu, Molokai, Maui, and Hawaii (Hawaiian Islands), and elsewhere
- An environmental weed in South Africa, invading and modifying riparian habitats
- Other Eucalyptus species are invasive
- Allelopathic
- Highly flammable (may increase fire risk)
- Tolerates many soil types
- Reproduces by seeds
- Hybridizes with other Eucalyptus species
- Capable of selfing (with reduced seed set)
- Reaches maturity in 3 years
- Seeds dispersed by water, wind and intentionally by people
- Coppices after cutting, but reported to be killed by fire
Low Risk Traits:
- Despite widespread planting and naturalization, not reported as an environmental weed in the Hawaiian Islands
- Unarmed (no spines, thorns, or burrs)
- May be browsed by animals if other foods are unavailable
- Thrives in full sun (dense shade may limit ability to establish and spread)
- Not reported to spread vegetatively
- Forms a small short-lived seed bank