Spotted Gum
Corymbia citriodora subsp. variegata, C. citriodora subsp. citriodora, C. maculata, C. henryi.
Other names:
Lemon-scented gum (C. citriodora subsp. citriodora only), spotted irongum.
Distribution and Availability
Description and natural occurrence
Spotted gum occurs mainly in the coastal areas of New South Wales and southern Queensland, but also in western areas of southern Queensland. Sawn timber from these species is generally available, and spotted gum is currently the highest volume native hardwood harvested in Queensland.
General Description
The heartwood ranges from light brown through to dark red-brown. Sapwood is usually white and up to 50 mm wide. The grain is moderately coarse textured and variable, with gum veins common. The presence of wavy grain can produce an attractive fiddleback figure. Depending on where it grew, Spotted Gum timber can appear light or dark brown through to almost deep red-brown hues. In some cases, it can have an olive green or red tinge – adding another layer to its beauty.
Physical & Mechanical Properties
The wood is hard, heavy and durable, with good resistance to wear and tear.
Working Properties
A popular choice for many projects, Spotted Gum is straightforward to work with. Naturally greasy, the timber machines wel – machining and surface preparation should be done immediately before gluing.
Durability
Spotted gum is strong and durable, making it ideal for a range of structural, exterior and interior applications including framework, decking, flooring and poles. Termite resistant.
Main Uses
Thanks to its extreme durability, Spotted Gum is a popular choice in engineering projects such as in wharf and bridge construction, railway sleepers, cross-arms, poles, piles and mining timbers.
It’s also favoured for construction applications like framing, and when seasoned, in cladding, internal and external flooring, linings and joinery. Also in fencing, landscaping, retaining walls and as structural plywood and hardboard.
The timber’s beauty lends itself well to special projects, such as fine furniture, outdoor furniture, turnery, joinery, parquetry.
Other Information
Spotted gum is the main Australian species for tool handles which are subjected to high impact forces, such as axe handles.
