Deciduous trees are trees that shed their leaves annually, usually in the fall. This process helps them conserve water and energy during the colder months when sunlight is limited. Common examples of deciduous trees include oak, maple, and birch. These trees typically thrive in temperate climates, where they experience distinct seasons. In spring and summer, deciduous trees grow lush green leaves, which help them photosynthesize and produce food. As autumn approaches, the leaves change color and eventually fall off, allowing the tree to enter a dormant state during winter.