JMH, Ficus lyrata aka fiddle leaf fig is native to western Africa and won't tolerate frost.* You would have to bring it indoors before you turn on the heat and the night temps dip below 50*F at night.* I wouldn't suggest growing it outdoors in a zone colder then 10 or 11.* Even in zone 10 it would be marginal and could get knocked to the ground in a sudden frost.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.