In Baltic and Slavic folklore, the Fern Flower is a mythical Fern that blooms only at midnight on the Summer Solstice. To find this glowing flower brings infinite wealth, invisibility, and animal speech. Only if one can face the terrifying forest demons that guard it.
Today, people celebrate this myth during midsummer Kupala Night festivals. Communities gather for midnight woods walks, bonfire jumping, and floating candlelit flower wreaths down rivers.