The Golden Fern 1985 on netflix

A handsome young shepherd stumbles across a magical golden fern in the forest. A stunning, enigmatic forest fairy named Lesanka is sent to retrieve it but instead falls hopelessly in love with him. When he’s forced to join the army and heads off to war, she sews a seed from the fern into his shirt to protect him. While he’s away, though, he falls for the icily beautiful daughter of the commanding general who demands he perform a series of Herculean tasks to prove his devotion to her.