Australian Tree Flora: Not All Evergreen

The statement that most Australian trees are evergreen is inaccurate. While eucalypts (78% of forest area) are evergreen hardwoods, Australia has diverse deciduous and semi-deciduous species in tropical, temperate, and arid zones, including boabs, red cedars, and many rainforest trees that drop leaves in dry seasons.

Reference

Australian Government Department of Agriculture, Fisheries and Forestry data shows forest composition but not a universal evergreen habit.