Evergreen refers to plants, typically trees or shrubs, that retain their green foliage throughout the year, regardless of the season. Unlike deciduous plants, which shed their leaves annually, evergreens continuously maintain their leaves or needles, providing consistent greenery in landscapes. Common examples of evergreen plants include pine, spruce, and holly. These plants are valued in landscaping for their year-round coverage, making them ideal for creating privacy screens, windbreaks, and visual interest in gardens during the winter months.