Where did purple loosestrife come from?

Purple loosestrife (Lythrum salicaria) is native to Europe, Asia, and northern Africa. It was introduced to North America in the early 19th century, likely for ornamental purposes and for use in herbal remedies. Since then, it has become an invasive species in many areas, disrupting local ecosystems and outcompeting native plants. Its rapid spread has raised concerns about its impact on wetlands and biodiversity.