Perennikasvien

Perennikasvien, also known as perennial plants, are a type of plant that lives for more than two years. Unlike annual plants, which complete their life cycle in one growing season, or biennials, which take two years, perennials are characterized by their ability to survive and often re-emerge year after year. This survival is typically achieved through specialized underground structures such as roots, rhizomes, tubers, or bulbs, which store food reserves and allow the plant to regrow after dormancy periods, often triggered by cold weather or drought.

The term "perennial" encompasses a vast diversity of plant life, including many familiar garden flowers like hostas, peonies, and daylilies, as well as common trees and shrubs. Their longevity makes them a popular choice for landscaping and gardening, as they provide consistent structure and color to an environment over multiple seasons, reducing the need for annual replanting. The life cycle of a perennial typically involves flowering and seed production each year, but the plant's vital structures persist beneath the surface. The specific adaptations and survival strategies vary greatly depending on the species and its native environment, ranging from deciduous trees that shed their leaves in winter to evergreen plants that retain foliage year-round.