when do trees change colors in the fall
Autumn leaf color 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.
Deciduous In the fields of horticulture and botany, the term deciduous means "falling off at maturity"[1] and "tending to fall off"[2] in reference to trees and shrubs that seasonally shed leaves, usually in autumn; to the shedding of petals, after flowering; and to the shedding of ripe fruit.