 Take them to a different part of the world. Expose them to the rigors of what's going on over there. And if the trees act poorly, try to find out what was causing it. And then you have a way to let the rest of the world know where these trees are located, where these sustainable plants are located, what to look for, and how to prevent an invasive species from messing things up. I didn't even know this was a thing. And it's a thing.