Edgar Valter was born on 21 September 1929, in Tallinn, the fourth child of a family of eight kids.

He began working as a freelance artist in 1950, eventually illustrating some of the most famous Estonian children literature characters, including the Krõll, the Naksitrallid, the Sipsik, and the Kunksmoor.

Edgar Valter lived his last 15 years in the Pöörismäe farm, located at the Urvaste rural municipality of the Võrumaa County.

In the book, Valter interprets pokus as animated childlike creatures, the grass actually being their golden head hair, which grows down to their feet.

In Rebaste village (Kanepi Parish), the Pokuland (Estonian: Pokumaa) is opened.