Almost all gum trees are native to Australia, where they're the primary food of koalas. Over time, they've been cultivated in other tropical regions around the world, and some gum trees can even live in cooler locations such as Norway. However, in some regions, gums are considered an invasive species.

Are there gum trees in America?

Of the 15 species found outside Australia, just nine are exclusively non-Australian. Species of eucalyptus are cultivated widely in the tropical and temperate world, including the Americas, Europe, Africa, the Mediterranean Basin, the Middle East, China, and the Indian subcontinent.

Where are gum trees found in Australia?

River red gum (E. camaldulensis) is the most widely distributed eucalypt, and is found in all Australian mainland states. The forests of south-eastern Australia contain a wide range of dominant eucalypt species, including major commercial timber species such as mountain ash (E. regnans), messmate stringybark (E.