野朝顔(ノアサガオ) blue morning glory

　ノアサガオの花は、朝は鮮やかな青紫色ですが、時間が経つにつれ、赤紫色へと変化します。アサガオは、午前中に萎んでしまいますが、ノアサガオは、午後も開花しています。人気のある植物ですが、繁殖力が旺盛なため、環境省の「生態系被害防止外来種リスト」では、重点対策外来種に指定されています。

　The flowers of the Blue Morning Glory are a vivid blue-purple in the morning, but as the time goes on, they change to a reddish-purple. While Morning Glories wilt during the morning, the Blue Morning Glory remains in bloom even in the afternoon. Although it is a popular plant, it is highly invasive and has been designated as a priority invasive alien species on the Ministry of the Environment’s "List of Alien Species with Potential to Cause Adverse Effects on Ecosystems in Japan."