Kern was a kind of crop growing in Anaea.

During the dragon residence in the Lower World and in Lavadome, it became clear how the lack of sun affected the health of dragons: it was found that a diet integrated with kern (mashed into a porridge or mixed with other food) was the only way to counter such issue.

The Uphold of Anaea was the main producer of kern to the Dragon Empire before and during the Age of Fire.

The importance of such resource for dragons made the Invasion of Anaea a troublesome event, and when the Red Queen discovered about this, she sent her Roc-riders to secretly spread a disease into the kern, resulting into the kern-plague.