In spring this perennial plantPlant that lives more than two years, the term is often used to differentiate a plant from shorter-lived annuals and biennials. More brightens up the margins of waterways with beautiful bright yellow flowers with the typical iris form.
Yellow iris
![Autore: Francesco Mezzalira](https://www.risorgivedibressanvido.it/wp-content/uploads/2020/08/GiglioDacqua.jpg)