Newsletter of the Rock Eagle 4-H Center
WINTER 2011-2012 • VOL. 12, ISSUE 1
Many Factors Combine to Create Spectacular Fall Colors
The amount and brilliance of the colors that develop in any particular autumn season are related to weather conditions that occur before and during the time the chlorophyll in the leaves is dwindling. Temperature and moisture are the main influences.
Photo by Matt Hammons A succession of warm, sunny days and cool, crisp but not
freezing nights seems to bring about the most spectacular color displays. These conditions plus higher sugar pro- duction by the tree spur production of the brilliant anthocyanin pigments, which tint reds, purples, and crimson.
The amount of moisture in the soil also affects autumn colors. A warm period during fall will also lower the inten- sity of autumn colors. A warm wet spring, favorable summer weather, and warm sunny fall days with cool nights should produce the most brilliant autumn colors. Information provided by the USDA Forest Service.
Inside: 2 Fall Color Paints Rock Eagle
3 Construction Begins on Cabins and Sutton Hall 4 Saturday at the Rock - Programming Open to the Public 5 Art at the Rock - Annual Event Exhibits Fine Art
6-7 The Bounty of the Hive - Bees and Beekeeping at Rock Eagle rockeagle4h.org
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