Family: Myrtaceae
Origin, Description & Uses:
Eucalyptus pulverulenta, commonly known as powdered gum or silverleaf mountain gum, is a small to medium-sized tree native to southeastern Australia. It is especially valued for its striking silvery-blue foliage, which is covered in a powdery coating that gives the plant its distinctive appearance. The rounded juvenile leaves are often used in floral arrangements and landscaping for their color and texture. This species is well-suited to dry, well-drained soils and is frequently planted as an ornamental tree, windbreak, or for cut foliage production.
Risks & Threats:
This species is considered low risk and has not shown significant invasive tendencies in Hawaiʻi or similar tropical environments. While it can reproduce by seed, it does not typically spread aggressively or form dense stands that displace native vegetation. As with many eucalyptus species, it may contribute to increased fire risk due to its oil-rich foliage and shedding bark, but overall, Eucalyptus pulverulenta poses minimal ecological threat when properly managed.
High Risk Traits:
- Questionably naturalized in California (conflicting reports)
- Genus has a reputation for naturalizing and invasiveness
- Host of the blue gum psyllid
- May cause Contact dermatitis in susceptible individuals
- Tolerates many soil conditions (and potentially able to exploit many different habitat types)
- May hybridize with other Eucalyptus species
- Potentially self-compatible
- Seeds wind-dispersed
- Coppices and resprouts following damage from cutting or fires
Low Risk Traits:
- No negative impacts have been documented
- Unarmed (no spines, or thorns)
- Shade-intolerant
- Landscaping and ornamental value
- Long time to reproductive maturity (20-50 years)
- Cut foliage used in floral arrangements
