Evergreens are trees and shrubs that retain their green leaves throughout the year, regardless of the season. Unlike deciduous plants, which lose their leaves in the fall, evergreens maintain their foliage, providing a consistent source of color and life in gardens and forests. Common examples of evergreens include pine trees, spruce, and cedar. These plants are well-adapted to various climates and can thrive in both cold and warm environments. Evergreens play a crucial role in ecosystems by providing shelter and food for wildlife, as well as helping to prevent soil erosion. Their year-round greenery also makes them popular choices for landscaping and holiday decorations, such as Christmas trees.