Trees that were planted, but growing "in wild", should be considered "wild", and additional "grade" for "grey zone" is required

[igor117]

Then you can say, for example, that Yellowstone National Park is where people intended it to be, so everything is not wild there. If someone intentionally put some species in other region and it lives and reproduce here it is where humans intended it to be, but considered wild under iN rules. So it’s not about intention either.