What are aquatic irises and loosestrifes? Why have I never seen them in Zhengzhou before? More than 2,000 aquatic irises and loosestrifes had just made their debut at the Green City Square and already drew attention from readers. Many热心readers called to inquire. For this reason, a reporter investigated. According to Si Gaixia, deputy director of the Green City Square Management Office, aquatic irises have bright colors and graceful postures, resembling dancers fluttering among lush greenery.