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 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 to November in the Northern Hemisphere and March to May in the Southern Hemisphere.
- ^ "The Science of Color in Autumn Leaves". usna.usda.gov. United States National Arboretum. October 6, 2011. Archived from the original on January 11, 2018. Retrieved June 18, 2015.
- ^ Wade, Paul; Arnold, Kathy (September 16, 2014). "New England in the Fall: Trip of a Lifetime - Telegraph". telegraph.co.uk. The Daily Telegraph. Retrieved June 18, 2015.
- ^ "BBC - Gardening - How to be a gardener - The gardening year - Autumn's theme". bbc.co.uk. BBC. September 17, 2014. Retrieved June 18, 2015.
- ^ "US Forest Service - Caring for the land and serving people". fs.fed.us. United States Forest Service. 2014. Retrieved June 18, 2015.
- ^ "MaineFoliage.com - Maine's Official Fall Foliage Website". MaineFoliage.com. 2013. Retrieved June 18, 2015.