(Harrisburg) -- The fall foliage in Pennsylvania's northern tier has already entered its peak color period.
State Department of Conservation and Natural Resources forester Ed Dix says a good growing season this spring set the stage for brilliant fall colors.
"The trees have accumulated lots of sugars as they photosynthesize and have had good lush growth," he says, "and it's those sugars, and the compounds made from them, that are going to be the color pigments."
Dix says the best colors of the season are currently moving from north to south. He says the midstate is divided into two zones, with some areas due to experience peak colors this coming week.
The brightest fall hues won't reach the region's southern counties until October 20th or later.
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