Collecting decidious in SEQ?

[Hornet]

I'm wondering if there is any spots in south east qld where i may be able to find decidious tree's growing wild to dig? I know its too warm here for most species but there are some that thrive, are any naturalised? Paticulary interested in ash species.

[Matthew]

celtis is widely available and considered a pest i think? Jamie will know of more and so will other local members who may jump in.

[Hornet]

Forgot to add, anything bar celtis. Know where to find heaps of that. Cheers for your input

John