Swamp Sheoak
Scientific name: Casuarina glauca
Overview
Swamp Sheoak is a medium-sized hardwood native to eastern Australia, where it commonly grows along estuaries, wetlands, and coastal floodplains. The species is well adapted to waterlogged and saline environments and plays an important ecological role in stabilizing soils and preventing erosion. Although it is not a major commercial timber species, the wood is dense, durable, and occasionally used for specialty woodworking, turning, and fuel.
Quick Facts
- Common Name: Swamp Sheoak
- Scientific Name: Casuarina glauca
- Region: Oceania & Pacific Hardwoods (Australia)
- Tree Size: 20–50 ft tall, 1–2 ft trunk diameter
- Average Dried Weight: 53 lbs/ft³ (850 kg/m³)
- Janka Hardness: Approximately 1,850 lbf
- Color: Reddish brown to dark brown
- Grain: Straight to slightly interlocked
- Texture: Fine and even
Identification Characteristics
Swamp Sheoak produces a reddish to dark brown heartwood that may deepen in color with age. The wood has a fine texture and often displays a subtle natural luster. Its density and attractive coloration make it desirable for small specialty projects.
Key identification traits include:
- Reddish brown to dark brown coloration
- Fine and even texture
- Straight to slightly interlocked grain
- Dense and hard structure
- Occasional attractive figure in quartersawn material
Working Properties
Swamp Sheoak is moderately difficult to work because of its density, but it machines and finishes well when sharp tools are used.
- Moderately difficult to machine
- Turns and polishes exceptionally well
- Produces a smooth finished surface
- Accepts finishes readily
- Highly wear resistant due to its density
Safety Note
Wood dust may cause irritation in sensitive individuals. Appropriate dust collection and respiratory protection are recommended during machining.
Common Uses
Swamp Sheoak is commonly used in a variety of applications, including:
- Woodturning
- Small furniture components
- Decorative objects
- Carvings
- Tool handles
- Specialty woodworking projects
- Firewood and charcoal
Sustainability & Notes
Swamp Sheoak is widespread throughout eastern Australia and is not considered threatened. The species is particularly important for wetland restoration projects and erosion control due to its tolerance of saline soils and periodic flooding. Commercial timber production is limited, and most wood is obtained from local harvests or landscape removals.
Comparative Notes & Related Species
Beefwood – A closely related sheoak known for its dense, attractive timber and more widespread use in woodworking.
River Sheoak – Another Australian sheoak with similar density and appearance that is commonly found along waterways.
Australian Blackwood – A more commercially important Australian hardwood valued for furniture and decorative woodworking.
Related Guides
Casuarina Species Guide – Explores the characteristics, distribution, and uses of sheoak and beefwood species from around the world.
Understanding Wood Strength: What Makes Wood Strong? – Explains how density and structure contribute to wood performance.
Best Woods for Outdoor Use – Examines wood species that perform well in demanding environmental conditions.
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
Swamp Sheoak is an excellent collector species because it represents one of Australia’s unique wetland-adapted hardwoods. Its dense reddish-brown wood and limited commercial availability make it an interesting addition to collections focused on Australian timbers, sheoak species, and lesser-known specialty hardwoods.
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Do you have lumber, wood samples, tree photographs, woodworking projects, furniture, carvings, turnings, musical instruments, or other items made from this species?
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.
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