Cold hardy australian plants

[SeaWalnut]

What would be the most cold hardy australian treesTasmania and New Zeeland included) or shrubs ,bearing fruit or not?
Eucalyptus Pauciflora,the snow gum seems to be a cold hardy to zone 6 tree ,but there should be otthers as well,not necesarely that cold hardy as the snow gum ,but still good to know.

[Acacia]

Look up where there is snow and a national park then check for list of flora. Here is an example https://en.wikipedia.org/wiki/Mount_Buffalo_National_Park#Vegetation. You will unlikely find a list of zone or cold hardiness and will have to further research the climate of the location.

[Pademelon1]

Eucalyptus gunnii is the most cold hardy Aussie tree, also maxing out at zone 6. It can be tapped to produce something akin to maple syrup. As for fruit, not much in the way of cold hardy things - Tasmanian mountain pepper (T. lanceolata) can withstand some cold. I imagine some of the flax lilies would too. Quandong and Aristotelia could maybe handle a light frost. A lot of the more southerly species from aromatic genera could probably handle a little cold. Pineapple grass can handle cold, but the berry is less than desirable. Bunya pines can handle a light frost.

[SeaWalnut]

Eucalyptus Pauciflora subsp Debeuzevillei ,the giant snow gum is cold hardy and beautifull tree.Eucalyptus Gunnii is what the nurserryes sell here.
Somme Callistemmon ,bottlebrush ,are also cold hardy to zone 7.
Toona Australis is a deciduous tree suposedly cold hardy to zone 8.I tryed to grow from seeds but they didnt germinate and ive read they need to be verry fresh to be viable.