The call for the enduring plant that always blooms, requires little work, and returns year after year is almost as old as gardening itself. Perennials fascinate most people because they return each year, can be used in a variety of ways, and express moods so well. The lifespan of a perennial depends on many factors. In addition to optimal site conditions, it is also genetically determined. There are short-lived perennials that often say goodbye after just three to four years, while a larger number of perennials live longer than five years. However, one notices more and more each year that they have passed their peak. Then there are also a number of perennials that can endure at the same location for over 40 years. This book aims to share the author's long-standing experience with these enduring winners with interested readers. For the longest-lasting species and varieties, there are tips on optimal site conditions, garden use, and suitable companion plants.