The most common leaf colors of fall are red, yellow, and orange. Some tree species can express several of these colors simultaneously as the season progresses. All leaves start out in summer as green.

For some trees ... of the color green,” Gallinat says. Other species, such as red maples and sweet gums, produce new pigments—red and purple anthocyanins—especially for the fall.

Rather than looking at fall foliage while sitting in mountain traffic ... City Park alone has more than 100 tree species, including some oaks and maples that provide orange and red leaves.

some continued rain and cooler temperatures would really help these tree species even show more of their brilliant colors,” said Parrott. The best way to track the fall foliage changes around ...