In Swedish Midsummer folklore, placing seven different flowers under a pillow is supposed to reveal a future spouse in a dream.
The custom belongs to a wider group of Midsummer beliefs concerning love, fertility, and the supernatural. Traditionally, the flowers are picked quietly, often after crossing seven different fences or fields, depending on the local version of the story. The dream is expected to feature the person one will eventually marry.
Swedish Midsummer celebrations also include dancing around a decorated maypole, singing, and eating seasonal foods such as new potatoes, pickled herring, and strawberries. The flower custom is folklore rather than a formal religious practice, and the number seven is symbolic in many European traditions. It should not be confused with the Swedish flower crown, which is worn openly during the celebrations rather than placed beneath a pillow.