Get real-time fall foliage updates and find the best fall color with our interactive map. Plan your fall trip today! Japanese maple autumn leaves Autumn leaf color is a phenomenon that affects the normally green leaves of many deciduous trees and shrubs by which they take on, during a few weeks in the autumn season, various shades of yellow, orange, red, purple, and brown.
[1] The phenomenon is commonly called autumn colours[2] or autumn foliage[3] in British English and fall colors, [4] fall foliage, or. See when fall leaves will peak in 2025! View our U.S. fall foliage map, find top leaf-peeping spots, and get tips for the best autumn color viewing.
In many places around the world, autumn is marked by the slow, beautiful change of green foliage to vibrant reds, oranges, yellows, and purples. Autumnal leaves in vibrant hues are a beautiful part of the season, but those leaves are also a vital part of keeping trees alive. Trees that have leaves that change color in fall are deciduous.
Leaves change color during the autumn because the amounts of pigments change as the leaves prepare to fall from the trees. All leaves gradually lose chlorophyll during the growing season, and this loss accelerates before leaf fall. Under optimal conditions this process of chlorophyll loss is very orderly and allows the plants to resorb much of the nitrogen in the structure of the pigment.
Learn why leaves change color in the fall and see the chemistry of the pigment molecules responsible for different leaf colors. Why do leaves change color in the fall? From vivid reds to golden yellows, the science behind autumn's colors reveals how weather, tree species and chemistry combine to create the seasonal. Why do leaves change color? Leaf color change is determined by several factors, which is why trees change at slightly different times during the fall season.
Schneider and UWL Chemistry Professor Heather Schenck point to several factors that influence leaf color. The Bigger Picture: Why It Matters At first glance, autumn's colors may feel like a gift of beauty-a natural festival marking the year's closing chapters. But beneath the colors is a story of survival, stress, and resilience.
Understanding when and why leaves change isn't just about predicting fall foliage for tourism.