Reddit user Independent-Design17 proposed a fascinating connection: the Elden Ring's Erdtree may be inspired by the Australian Christmas tree, Nuytsia floribunda.

Superficial similarities exist, particularly between the game's smaller Erdtrees and Nuytsia. However, deeper thematic parallels have been noted by fans. In Elden Ring, the Erdtree guides the souls of the deceased, explaining the catacombs at its base. Similarly, Nuytsia holds spiritual significance in Aboriginal Australian culture, its flowering branches representing the souls of the departed, and its vibrant colors linked to the sunset, the believed destination of spirits.

Further strengthening this connection is Nuytsia's semi-parasitic nature; it draws nutrients from neighboring plants. This mirrors a popular fan theory suggesting the Erdtree is parasitic, having overtaken the roots of an ancient Great Tree, the original source of life. Interestingly, mentions of a "Great Tree" in item descriptions are now believed to be a translation error, referring instead to the Erdtree's own "Great Roots."

Ultimately, whether FromSoftware intentionally drew inspiration from Nuytsia floribunda remains a mystery, known only to the developers themselves.