That’s a great question. The Pennsylvania Tourism Office provides a great deal of timely information regarding the Commonwealth’s unique, regional fall leave patterns. Click HERE for more information. Likewise, the Pennsylvania Department Of Conservation and Natural Resources, which notes that “Pennsylvania has a longer and more varied fall foliage season than any other state in the nation — or anywhere in the world,” releases a Weekly Fall Foliage Report. And be sure to view the department’s “Why Do Autumn Leaves Change Color?” overview HERE.