An evergreen plant is a type of plant that retains its foliage, such as leaves or needles, throughout the year. They do not shed all of their leaves at once, providing greenery and photosynthetic activity even in colder or drier seasons. Evergreen plants include conifers like pine, spruce, and fir trees, as well as some broadleaf plants such as holly and certain species of eucalyptus. Their continuous foliage allows them to maintain a constant presence and perform photosynthesis year-round, adapting to various climates and environments. This characteristic sets them apart from deciduous plants that shed their leaves during specific seasons.