Stinging nettle

The Slavs attributed magical properties to the nettle.

An excerpt from the article 21 facts about Stinging nettle

Fabrics made with nettle were said to protect against disease and ward off evil forces. In Hans Christian Andersen's fairy tale "The Wild Swans," the main character had to sew nettle shirts for her 11 brothers to break a spell.

According to a Danish legend, stinging nettles grow in places where elves are buried.