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A perennial plant or simply perennial is a plant that lives for more than two years.The term is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth from trees and shrubs, which are also technically perennials.erennial plants can be short-lived (only a few years) or they can be long-lived, as are some woody plants like trees. They include a wide assortment of plant groups from ferns and liverworts to the highly diverse flowering plants like orchids and grasses.
Examples of perennial flowers include the hyacinth, daffodils, tall bearded iris, and day lilies. In addition to these flowering plants, gardeners may choose from numerous other perennials. Perennial flowers or plants can be divided into different types: tender, hardy, herbaceous, and woody.hese terms are used as a means of identifying and separating certain types of flowers. What makes them different from one another is the life cycle of the plants and how long they produce blooms. When planting flowers or creating a garden, it is necessary to understand which plants are perennials and which are annuals.