Jarrah is an iconic eucalypt of Perth and the south-west. It is a prominent tree on both the Darling plateau, where it is a medium to large tree, and on the coastal plain, where it is smaller and more branching. Its hardy reddish timber has been used extensively in construction and furniture-making.
Much of the Jarrah on the Darling plateau has been affected by root-rot from a water-borne mould. This causes the condition known as “dieback” as the Jarrah trees (and others) slowly die back from the ends of their branches. To reduce the spread of dieback, many roads and tracks are closed to vehicles.
Jarrah flowers in spring and early summer, earlier than Marri. Jarrah honey, like New Zealand’s Manuka honey, is said to have good antimicrobial activity.
The species name is from Latin – marginatus “having a border” and refers to the thickened border of the leaves. Three sub-species are now described.
“Leaf and branch: trees and tall shrubs of Perth” by Robert Powell. Published by the Western Australian Department of Environment and Conservation, 2009.
“The special eucalypts of Perth and the South-West” by Malcolm E. French and Dean Nicolle. F & N Publications.