it is pretty true, plus theres another reason the invasive tree is still growing there, because people think its an iconic tree and shouldnt be cut down and its "protected". it grows all along the coastal areas, and around north cal lakes, and on campus of a university i went too, i identified at least more than just blue gum growing around there, there seems to 1 or 2 other species in there with the "blue gum". they have another more exotic one growing on campus, the rainbow gum, that one doesnt seem to be established or grown in the wild, only as ornamental, its a tropical species.