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| Thom Morgan |
After summer winds down, those of us living in the Northern Temperate
Latitudes get treated to one last burst of color as leaves on trees begin to
change. Daylight decreases from 15 hours to—eventually—10, causing leaves to
compensate for the decrease in light; green chlorophyll fades as the other
plant pigments stand out to produce red, orange and yellow. Finally, leaves
drop due to what is called an abscission layer, which forms and allows leaves to
break away.
Trees for fall leaf color:
