In Sweden, the tradition of picking flowers for midsummer is facing challenges due to invasive species.

Experts from the Swedish University of Agricultural Sciences and Naturvårdsverket advise against using invasive plants such as lupines, giant hogweed, and Japanese knotweed, which harm native flora.

While these plants might look attractive in a midsummer bouquet, their spread can be damaging to the ecosystem.

Officials recommend using invasive species in decorations but ensure to dispose of them properly to prevent further spread.

Protecting Sweden's natural biodiversity is essential while celebrating traditional holidays.