What Causes Leaves To Change Colors In Fall

Leaves change color in the fall as trees prepare for winter. Shorter days and cooler temperatures signal trees to stop producing chlorophyll, the green pigment that helps with photosynthesis. As chlorophyll fades, other natural pigments—like yellows, oranges, and reds—become visible, creating the vibrant fall colors. Eventually, the tree sheds its leaves to conserve energy and protect itself during colder months.