Eliot laughs. "They were made by the Watcherwoman, Jane Chatwin. I'm guessing you haven't read the books, or you would have heard of all this stuff. Anyway, she and her siblings went to Fillory in the 1950s and ruled it before us. Jane stayed after her siblings left and learned how to do time-travel magic. The trees don't actually do anything on their own, but they served their purpose."