Autumn leaf color is a phenomenon that affects the normal 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 simply foliage[5] in American English.
In some areas of Canada and the United States, "leaf peeping" tourism is a major contribution to economic activity. This tourist activity occurs between the beginning of color changes and the onset of leaf fall, usually around September and October in the Northern Hemisphere and April to May in the Southern Hemisphere.
Chlorophyll and the green/yellow/orange colors
Pigments that contribute to other colors
Function of autumn colors
Tourism
Climate influences
References
Further reading
External links