Perennials, or plants and flowers that come back year after year, are found in virtually every yard. Perennial flowers work in multiple situations: in whole garden beds, in combination with annuals and bulbs, as accent to shrubs and trees, and in containers and windowboxes. In addition, perennials often increase in size each year, which means they can often be divided and added to other spots in the landscape. The Better Homes and Gardens Plant Encyclopedia contains a wealth of information to help you tend to your existing perennials as well as add new and interesting plants to your landscape. The searchable tool enables you to search by perennial common or scientific name, plant characteristics, growing season, and common uses. You'll also discover what perennial plants work well in sun or shade, USDA Hardiness Zones, growing requirements, and planting suggestions for perennials. View a list of perennials by common name or scientific name below.