In Florida it is classified as a class 1 invasive. It falls somewhere between Brazilion Peppers and Austrailian Pine.
The tourist and snowbirds go gaga over the trees growing on the John Ringling Estate in Sarasota, but little do they know how much envionmental damage they cause. Nothing, I mean absolutely nothing, grows anywhere close to these monsters.
If I was king of the world, I would take Garlon or Roundup to each and every one I could find. Don't take this the wrong way, nothing personal, but I sincerely hope yours and all others die!
Having seen pictures of them growing in the wild, I believe you! They're not called "strangler figs" for nothing. Ficus makes a nice houseplant, however, especially for those of us in the frozen north who long to see some green in the winter. Thanks for this reminder of the damage non-native plants can cause.