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 smaller Erdtrees in the game to Nuytsia. However, fans have uncovered more profound parallels.
In Elden Ring lore, the Erdtree guides the souls of the deceased, explaining the catacombs found at its base. Interestingly, Nuytsia holds similar significance in Australian Aboriginal culture, revered as a "spirit tree." Its vibrant blooms represent the souls of the departed, their bright colors echoing the sunset, the believed destination of spirits.
Further strengthening this connection is Nuytsia's semi-parasitic nature. It thrives by drawing nutrients from neighboring plants. This resonates with a popular fan theory suggesting the Erdtree is parasitic, having usurped the life force of an ancient Great Tree. However, it's now understood that in-game references to a "Great Tree" are likely mistranslations, referring instead to the Erdtree's own extensive root system.
Ultimately, whether FromSoftware intentionally drew inspiration from Nuytsia remains a mystery known only to the developers.