The Everlasting Sapling is an ancient artifact, rumored to have been created by the roaches.
It is said that eating even one of it's leaves can grant eternal youth to a bug, so it is a very sought item, but no one has ever found it.
Queen Elizant I led her people to the land that would become Bugaria in search of said sapling, only to find the remains of the roaches that once lived there. The queen shortly passed away after setting up the Ant Kingdom City, leaving the task of finding the sapling to her daughter.
It is rumored that some artifacts are linked to the sapling and will show the way to it.