The word autumn comes from the Old French word autompne (automne in modern French), and was later normalized to the original Latin word autumnus. There are rare examples of its use as early as the 14th century, but it became common by the 16th century.


In many places, autumn is a time for harvesting most crops. Deciduous trees (trees that lose their leaves every year) lose their leaves, usually after turning yellow, red, or brown. Also, in many countries, autumn is the time a new school year starts. In the UK, the period of school between the start of September and the end of December is known as the 'Autumn Term'.
When it is autumn in the Northern Hemisphere, it is spring in the Southern Hemisphere. When it is autumn in the Southern Hemisphere, it is spring in the Northern Hemisphere. On the Equator, Autumn is very much like Spring, with little difference in temperature or in weather. Autumn is a time when most animals are looking for food so they can store up for winter, because they soon will be going into hibernation. The weather gets colder and more windy.
The various Climatic Changes that occur in cyclic pattern are termed as 'Seasons'. There are four general seasons occuring on Earth - Spring, Summer, Autumn and Winter.

Autumn Leaf :
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, one or many colors that range from red to yellow. The phenomenon is commonly called fall colors and autumn colors, while the expression fall foliage usually connotes the viewing of a tree or forest whose leaves have undergone the change. In some areas in the United States, and in much of Canada "leaf peeping" tourism between the beginning of color changes and the onset of leaf fall, or scheduled in hope of coinciding with that period, is a major contribution to economic activity.


Function of Autumn Colors :
Deciduous plants are believed to shed their leaves in autumn primarily because the high costs involved in their maintenance would outweigh the benefits from photosynthesis during the winter period of low light availability and cold temperatures. However, there is no reason why leaf fall should necessarily be preceded by the production of vivid autumn colors, and the function of the color change is still uncertain. Autumn colors (especially red) are not just due to the breakdown of chlorophyll; in fact anthocyanins (red-purple) are actively produced in autumn.
What use is the production of pigments in leaves that are about to fall? A number of hypotheses have been proposed, including photo protection, coevolution and allelopathy.
Flowers Blooming in Autumn are :
Acashia, Allium, Alstromeria, Amaranthus, Anemone, Baby's Breath, Bittersweet, Carnation, China berry, Chrysanthemum, Cockscomb, Cosmos, Echinops, Freesia, Gerbera Daisy, Gladiolus, Hypericum, Iris, Juniper, Kangaroo paw, Kalancheo, Liatrus, Lily, Asiatic, Lily, Gloriosa, Misty Blue, Orchid, Pepper berry, Protea, Queen Ann's Lace, Quince, Rover, Roses, Rowen berry, Salvia, Solidago, Statice, Star of Bethlehem, Sunflower, Yarrow, Zinnia.
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