This is the land that sits up at the top of the hill. The royal family and a few other families reside up here. This area is also were all of the training for the army takes place. This territory is the safest, due to the fact it is very bright and that it is a long way and uphill from the Lyde territory.
The name The Tree Territory comes from the giant oak that stands at the dead top of the hill. You can almost always find either Ezazel and Mirage, or some part of the Royal family around the tree.
Not that many horses reside up by the royal family, so if your horse is rejected, please don't get discouraged.