The timing of color change and leaf fall are primarily regulated by the increasing length of night.
During the growing season, chlorophyll is continually being produced and leaves appear green. As days grow shorter, and nights grow longer and cooler, biochemical changes in the leaf begin the process that paints the landscape with nature's autumn palette.
In early autumn, in response to the shortening days and declining intensity of sunlight, veins that carry fluids into and out of the leaf gradually close off. These clogged veins trap sugars in the leaf and promote production of anthocyanins. The carotenoids and anthocyanins present in the leaf are unmasked and show their colors. http://www.na.fs.fed.us/fhp/pubs/leaves/leaves.shtm
Great Mountain, Va. Ocoee Highway, Tn.
Estimate peak period:
The best time for viewing fall color should be the third week in October through second or third week in November. Remarks:
District maps are available if needed for $9.00. Special seasonal activities are: picnics, hiking, camping, fishing, and hunting “as State Regulations allow”. For further information, please contact the District Office at (205) 489-5111.
October 1, 2012
The Daniel Boone National Forest provides outdoor recreation opportunities year round. The fall season is a perfect time to get outdoors and enjoy the changing colors of the forest.
Land Between the Lakes
Come check out the annual elk rut in the Elk & Bison Prairie. The bull elk will soon be strutting their stuff and bugling to attract the females.
Fall is a great time to visit the Pisgah and Nantahala National Forests in western North Carolina to view leaves adorned in brilliant reds, oranges and yellows.
When temperatures cool in autumn, chlorophyll starts to degrade allowing the hidden pigments of deciduous leaves to provide a rich, colorful display.
In North Carolina, this rich display typically starts at the highest elevation in late September and early October gradually progressing to the lowest elevation by late October and early November.
Cherokee National Forest - 2012
Fall is the perfect time to visit many special places in the Cherokee National Forest:
Ocoee overlook 2012