The term perennial is reserved for plants that live for more than 2-years. Horticulturists then further classify them into woody and herbaceous perennials. Woody perennials are whose above ground parts persist over winter, while herbaceous perennials are non-woody plants that die back to the ground each winter. However, the roots survive the winter and the plants re-sprout in the spring. This collection is the herbaceous type, which make them high value plants that will return for years to come with little to no effort. Geranium Rozanne are also known as simply Hardy Geranium. They produce large blooms and attractive foliage. Most effective when grown in groups in borders, containers, or rock and cottage garden, so buy several for maximum effect. Rozanne is better than the older varieties, blooming for weeks and sometimes even months.