To find this powerful plant the seeker had to enter a forest before midnight on the Eve of Kupala. The flower would climb up the stalk of the fern, and precisely at midnight it would bloom so brightly that no one could look direcly at it. In order to harvest it a circle had to be drawn around it, and the seeker had to deal with demons trying to distract him/her from doing so. It was said that if you answered the voices, or faltered during the task, it would sacrifice its own life. Anyone finding this flower gained the ability to read minds, finding treasure, and repel all evils.

See also Polish mythology