New Zealand Found the Last Tree Left on Earth — What Followed Was Impossible

Pennantia baylisiana was once considered the rarest tree on Earth. In 1945, botanist Geoff Baylis discovered a single surviving tree growing from a steep cliff on the remote Three Kings Islands, off the northern coast of New Zealand. It was the only known individual of its species left anywhere in the world. Because there were no other trees to reproduce with, the species faced almost certain extinction. Yet decades of careful scientific work—including propagation from cuttings and later successful seed production—completely changed its future. Today, Pennantia baylisiana survives thanks to one of the most remarkable plant conservation stories ever documented. In this video, we explore how one lonely tree was found, why it became the world's rarest tree, and how New Zealand turned a species on the brink of extinction into a conservation success.