Jarrah tree appearance wood uses and lumber
Jarrah trees are native to Western Australia and well adapted to the harsh and dry conditions of these areas. The scientific name of jarrah is eucalyptus marginata and is part of the mytaceae family. Jarrah is one of Australians most harvested hardwood trees. The wood has a very nice dark red brown color and is very durable. The tree flowers have excellent nectar making them popular to bees and resulting in top quality honey!
Jarrah tree, leaf and flower description
The jarrah tree can grow to heights up to 170 feet or 52 meters. The tree is classed evergreen and has leaves all year.
Jarrah leaves are arranged alternate and lanceolate shaped. New leaves are dull green colored and darken when aging. Mature leaves have stalks in the center and are shiny dark green. A tree leaf can reach lengths up to 11 inches or 28 cm.
Jarrah trees have very nice white flowers hanging in clusters. The flowers bloom once every two years and contain big amounts of nectar. This nectar plays a vital role in the production of honey and also is a great food source for wildlife.
Jarrah tree bark and trunk
Young jarrah trees have rough grey to reddish brown bark. Older bark is fissured with long peeling strips exposing the young bark beneath. The trunk of the jarrah tree is long and straight, braches start high up. The diameter of the trunk depends on the age of the tree. Older trees can have trunks with a diameter up to 5 feet or 1.5 meters.
Jarrah wood properties and durability
Fresh jarrah heartwood has a rich dark reddish brown color. The sapwood is much lighter but exposure to sunlight gives it a darker color, more in line with the heartwood. Jarrah wood has nice colorations, medium to coarse texture, hardwood, high strength and high stiffness properties. The average dried weight of the wood at a moisture content of 12% is 925 kg per cubic meter. The durability of jarrah wood is classed as III moderate durability.
Jarrah wood working tips and uses
Jarrah wood is heavy hardwood with a high density. It is therefore difficult to work with hand tools. The wood can even have blunting effect on cutting edges of machines. Pre drilling is advised when screws or nails are used.
Jarrah wood glues and finishes well both by hand or machine. It is recommended to let the lumber acclimatize to the environment. Fresh wood can shrink when drying and case internal bending stresses. This can result in wrapping and bending or visible cracks.
Jarrah wood is used in a wide range of products like
- heavy construction
- and more!