About Australia customs

No, no food or seeds etc are allowed to bring in Australia. Before the plane landing, there would be announcement that no food is allowed to enter Australia.

Can I mail food by boxl to Australia?

携綠茶包入澳洲境內並不禁止 (個人用量)，但緊記，一定一定要申報(declare)，否則未見官先打30板。