An irony is that when leaves are at their most vibrant colors during fall, they're rapidly dying. The climax in a leaf's life occurs when an autumn breeze blows the dying leaf from a twig. The petiole, the stem-like part of the leaf which holds the blade in place, breaks off cleanly between the cork cells. The blade and its petiole flutter to the ground as a result. Of course, some leaves hardly change color at all during the year.
Evergreens are the most notable examples.
Trees containing leaves that change colors and fall off during autumn are known as deciduous. The majority of the forested area in the American Northeast is deciduous. Autumn is more than vibrant colors and diminishing days - it's a state of mind. We welcome your questions, comments or suggestions .