perennial(lasting or remaining active throughout the year, or all the time) adjective [UK: pə.ˈre.nɪəl] [US: pə.ˈre.niəl]
planta perennenoun {f}
perennial [perennials](plant active throughout the year, or has a life cycle of more than two growing seasons) noun [UK: pə.ˈre.nɪəl] [US: pə.ˈre.niəl]