Uses
The roots, along with those of other species of Osmunda, are used for the production of osmunda fibre, used as a growing medium for cultivated orchids and other epiphytic plants.
According to Slavic mythology, the sporangia, called "Perun's flowers", have assorted magical powers, such as giving their holders the ability to defeat demons, fulfill wishes, unlock secrets, and understand the language of trees. However, collecting the sporangia is a difficult and frightening process. In earlier traditions, they must be collected on Kupala night; later, after the arrival of Christianity, the date is changed to Easter eve. Either way, the person wanting to collect Perun's flowers must stand within a circle drawn around the plant and withstand the taunting or threats of demons.
Seasoned Royal Fern is also used in the dish Namul in Korean royal court cuisine.
The young shoots of the fern are, along with the similar shoots of many other fern species, known in some places as fiddleheads, and eaten as food, thought to have an asparagus-like taste.
Read more about this topic: Osmunda Regalis