The Panopticon willow was a type of semi-sentient tree that could live well over eight hundred standard years.

The willow had golden optical sensors in each bud of each branch, much like eyes, that could interpret the tree's surroundings. These sensors could focus onto a individual targets, and could be shifted by moving its branches. Force-sentives such as the Jedi were able to communicate with the Panopticon willow by touching its bark, which allowed the Jedi to see through the tree's eyes.