Reddit user Independent-Design17 proposed a fascinating connection between Elden Ring's Erdtree and the Australian Christmas tree, Nuytsia floribunda. Superficial similarities exist, particularly when comparing the in-game Small Erdtrees to the Nuytsia. However, the parallels run deeper.
Elden Ring lore suggests the Erdtree guides the souls of the deceased, explaining the catacombs at its base. Interestingly, Nuytsia floribunda holds similar spiritual significance in Aboriginal Australian culture. Each flowering branch represents a departed soul, its vibrant color echoing the sunset – the believed destination of spirits.
Further strengthening the comparison is Nuytsia's semi-parasitic nature; it draws nutrients from neighboring plants. This resonates with fan theories suggesting the Erdtree is parasitic, having possibly overtaken the roots of an ancient Great Tree, the original life source. However, recent findings indicate that references to a "Great Tree" in game descriptions are mistranslations, actually referring to the Erdtree's own extensive root system.
Ultimately, whether FromSoftware intentionally drew inspiration from Nuytsia floribunda remains a mystery known only to the developers.