Blue Gum
Scientific name: Eucalyptus globulus
Overview
Blue Gum is one of the most widely recognized eucalyptus species in the world, valued for its rapid growth, commercial importance, and global plantation use. Native to southeastern Australia and Tasmania, the species has been extensively planted in temperate regions worldwide for timber, pulpwood, fuelwood, and essential oil production.
The wood is typically pale brown to light reddish brown with interlocked grain and a moderately coarse texture. Blue Gum is known for its strength and density, though it can present challenges during drying and machining due to internal stresses common in eucalyptus species.
Within the Oceania & Pacific hardwood cluster, Blue Gum represents one of the most internationally important Australian hardwood species and a cornerstone of global eucalyptus forestry.
Quick Facts
- Common Name: Blue Gum
- Scientific Name: Eucalyptus globulus
- Region: Oceania & Pacific Hardwoods (Australia & Tasmania)
- Tree Size: 100–230 ft tall, 4–8 ft trunk diameter
- Average Dried Weight: 54 lbs/ft³ (865 kg/m³)
- Janka Hardness: 1,910 lbf
- Color: Pale brown to light reddish brown
- Grain: Interlocked to irregular
- Texture: Medium to moderately coarse
Identification Characteristics
Blue Gum is identified by its pale brown coloration, dense structure, and interlocked grain. The wood frequently displays tension characteristics and occasional ribbon figure on quartersawn surfaces.
Freshly cut material may also produce the distinctive medicinal aroma associated with eucalyptus oils.
Key identification traits include:
- Pale brown to reddish brown coloration
- Interlocked grain structure
- Medium to coarse texture
- Moderate ribbon figure
- Dense hardwood structure
- Distinct eucalyptus aroma when freshly worked
- Moderate natural luster
Working Properties
Blue Gum is considered moderately difficult to work due to its density, interlocked grain, and tendency toward movement during drying. Proper machining and drying practices are important for achieving stable finished lumber.
- Machines moderately difficult
- Interlocked grain may produce tear-out
- Can develop drying stresses and movement
- Good wear resistance
- Strong nail and screw holding properties
- Accepts finishes effectively
- Moderate dimensional stability when properly dried
- Durable for flooring and utility applications
Safety Note
Wood dust from Blue Gum may cause irritation in sensitive individuals. Proper dust collection and respiratory protection are recommended during woodworking operations.
Common Uses
Blue Gum common uses including:
- Flooring
- Construction timber
- Pulpwood
- Furniture
- Interior joinery
- Utility timber
- Woodturning
- Railroad ties
- Firewood
Sustainability & Notes
Blue Gum is among the most widely planted eucalyptus species globally and plays a major role in commercial forestry operations across multiple continents.
The species is especially important in pulp and paper industries because of its rapid growth and large biomass production. In some regions outside its native range, however, Blue Gum plantations have raised ecological concerns related to water consumption and invasive spread.
Commercially, the wood remains important for utility timber, flooring, and industrial uses.
Comparative Notes & Related Species
Sydney Blue Gum – Another important Australian eucalyptus species commonly used for structural and flooring applications.
Manna Gum – A lighter temperate eucalyptus species associated with Australian forest ecosystems and utility timber production.
Alpine Ash – A pale temperate Australian eucalyptus species valued for straight grain, good workability, and widespread use in flooring and interior woodworking.
Related Guides
Drying & Acclimating Exotic Woods
Learn how proper drying and acclimation reduce movement, checking, and internal stress in hardwood lumber.
Understanding Interlocked vs Straight Grain
Explore how grain orientation affects machining, stability, and finished appearance.
Wood Families & Trade Groups
Understand how eucalyptus species and other related woods are grouped within commercial timber classifications.
Compare Wood Properties
See how this species ranks in density and hardness using our Wood Density & Janka Hardness Chart. You can also explore Hardest Woods, Softest Woods, and Most Dense Woods for quick comparisons.
Collector Notes
Blue Gum samples are important within eucalyptus collections because of the species’ global forestry significance and widespread commercial use. Well-prepared samples may display attractive ribbon figure and subtle reddish brown coloration.
Collectors often value the species as a representative example of internationally planted Australian eucalyptus timber.
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Exotic Woods of the World welcomes photographs from woodworkers, collectors, sawyers, researchers, and wood enthusiasts around the world. Selected submissions may be featured on this page and throughout our website to help document and showcase real-world examples of this species.
When submitting photos, please include the common name, scientific name (if known), a brief description, and any information you would like us to share with the image.
Wood Sample Collection
This species is part of an ongoing effort to document and preserve wood samples from around the world.
Learn more about contributing to the collection:
Resources
Authoritative botanical and forestry references used in compiling information about this species include:
• USDA Forest Service – Wood Handbook: Wood as an Engineering Material
https://www.fpl.fs.usda.gov/products/publications/
• The Wood Database – Global reference for wood identification, physical properties, and woodworking characteristics
https://www.wood-database.com/
• Royal Botanic Gardens, Kew – Plants of the World Online – Botanical taxonomy and species distribution database
https://powo.science.kew.org/
• International Union for Conservation of Nature (IUCN Red List) – Global conservation status assessments
https://www.iucnredlist.org/
• Convention on International Trade in Endangered Species (CITES) – International trade regulations for protected plant species
https://cites.org/
Additional forestry publications, academic research papers, and regional timber studies may also be referenced where available.
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Availability & Where to Buy
Exotic hardwood availability can vary significantly depending on region, sustainability regulations, and supplier inventory.
As this archive grows, recommended suppliers and specialty wood retailers will be listed here to help woodworkers locate responsibly sourced material.
Lumber Suppliers:
Availability varies — see the Where to Buy Exotic Woods page for current sources.
Related Tools & Products:
• Gorilla All Purpose Wood Filler, Natural Finish (16 oz) for filling cracks, holes, gouges, and imperfections before sanding, staining, or painting woodworking projects
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• DEWALT DPG82 Concealer Anti-Fog Safety Goggles for protecting your eyes from sawdust, wood chips, and flying debris during cutting, sanding, and routing
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• WORKPRO Folding Roller Stand with Adjustable Height for supporting long boards, plywood, and lumber during table saw, miter saw, and woodworking operations
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