FALL FOLIAGE REPORT - Updated Weekly
|Blue Ridge Parkway||Danville/Southside|
|Roanoke Valley||New River Valley|
How does autumn color happen?
As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter. During winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during the summer. They begin to shut down their food-making factories.
The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small amounts of these colors have been in the leaves all along. We just can't see them in the summer, because they are covered up by the green chlorophyll.
Which leaves turn which colors?
- Oaks: red, brown or russet
- Hickories: golden bronze
- Dogwood: purple-red
- Birch: bright yellow
Poplar: golden yellow Maple trees show a whole range of colors:
- Sugar Maple: orange-red
- Black Maple: glowing yellow
- Red Maple: bright scarlet
YOUR FOLIAGE REPORTS
AERIAL FALL FOLIAGE PICTURESAerial pictures from around the Roanoke Valley of the fall foliage from a helicopter. The pictures were taken Saturday, Oct. 20, 2012.