- The reason the one at Hogwarts is never seen teleporting its branches is because no one has ever tried to take its sap. The knot on the trunk that causes the branches to freeze is something all of these trees have, and the local people use it to collect the sap safely. As for what a tree from South America is doing in Britain? It was presumably imported there sometime in the past to guard the entrance to the Shrieking Shack.
WMG / Voices in the Dark