What is a hardy 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.
What are the long flowering hardy perennials?
Some of the best include Geranium Rozanne, famous for its incredibly long flowering season, and Salvia Caradonna, which blooms early and often. Gaura Whirling Butterflies, Verbena bonariensis, Scabiosa Butterfly Blue and Nepeta Six Hills Giant also flower for much of the summer. Top choices include Geranium Rozanne, one of the longest flowering perennials, and Erigeron karvinskianushelle, which fills gaps and spills softly over edges. Helleborus orientalis brings early colour in winter, while Echinacea Magnus and Rudbeckia Goldsturm offer bright summer blooms with almost no care required.