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More days of full sunshine during the months of August and September, along with with temperatures above 50 degrees F. days and below 40 degrees F. (but above freezing) nights, right before and during the three-week change period will result in the most brilliant color formation of leaves during autumn.

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โˆ™ 2009-10-10 14:13:03
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Q: What kind of weather during the year causes the bright color of Autumn foliage?
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