A wetland plant called Decodon verticillatus mainly reproduces by making copies of itself instead of using seeds at its northern range edge. Scientists studied the plant's genes and found that the asexual plants had more genetic diversity and different mutations compared to the sexual plants. This suggests that asexual reproduction helped the plant spread further north than it could have with just sexual reproduction. Understanding how plants like Decodon verticillatus adapt and expand their ranges is important for protecting them in the face of environmental changes caused by humans.