Can you have an evergreen perennial?
Evergreen perennials are distinct from herbaceous perennials in that they retain their foliage all-year round. In contrast, herbaceous perennials die back in the autumn and winter then re-grow from their root-stock in the spring. evergreen flowering perennials will keep their green foliage all year, long after the blooming season is over. Many herbs are particularly known for being great practical flowering plants with evergreen foliage, such as lavender, rosemary, and salvia, among others.