Messmate - Eucalyptus Obliqua
Messmate grows in Tasmania, Victoria and New South Wales. The heartwood is a pale brown with only slight variation. The sapwood is a pale yellow and quite distinguishable. The grain is quite course with some interlocking grain and gum vein being common.
Karri - Eucalyptus Diversicolor
Karri is known as the giant tree of Western Australia, with examples in excess of 50 metres in height. It has quite rapid growth, and can attain enormous dimensions. It is found in the higher rainfall areas in the south west of Western Australia, favouring light loamy soils of good depth. The heartwood varies from rich reddish browns through to pale pinks with the sapwood being a clearly distinguishable light yellow. The texture is course and considerable interlocked grain may be a feature.
Jarrah - Eucalyptus Marginata
Jarrah is a large sized hardwood found only in the south west of Western Australia. The heartwood varies from rich reds to deep browns, with sapwood being a clearly distinguished pale yellow. The texture is course and generally straight grained although some interlocked grain may feature.
Grey Ironbark
Ironbark is the hardest timber of all the Australian species. The most common commercial species is Eucalyptus Paniculata - another species is E. siderophloia. The heartwood of the Grey Ironbarks ranges from light grey or light chocolate with some darker reds and browns sometimes occurring. Sapwood is slightly lighter in colour. Grey Ironbark may have various regional variations such as the 'Black Ironbarks' around Port Macquarie, which have similar light colours with black narrow to broad streaks running through the timber. Texture is moderately coarse and even.
Flooded Gum (Rose Gum) - Eucalyptus Grandis
Flooded Gum (also known by the trade name of Rose Gum) is a large hardwood that grows in the moist soils along the east coast of Australia ranging from around Bulahdelah in New South Wales up to northern Queensland. The heartwood is a pink to pale red-brown with the sapwood not clearly distinguishable. The grain is straight and the texture is moderately course and even. The timber often features the work of the scribbly borer. This insect leaves a small trail mark in a weaving or 'scribbling' pattern on the timber.