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 About New England’s Foliage
Every autumn throughout New England, diminishing length of daylight and falling temperatures induce trees to shed billions of tons of leaves. Preceding this preparation for winter the trees present a spectacular color show. Leaves that have been green all summer turn to brilliant shades of yellow, orange, and red.
These color changes are caused by transformations in leaf pigments, primarily the green pigment chlorophyll. During summer, the leaves of trees are producing sugar from carbon dioxide and water by the workings of light and chlorophyll. Chlorophyll causes the leaves to appear green.
The shorter days and cool nights of autumn set off changes in the tree. One is the growth of a corky membrane at the base of the leaf stem, which interrupts the flow of nutrients into the leaf. This stops the production of chlorophyll in the leaf, and the green color of the leaf fades, allowing the reds, oranges and yellows to burst forth. The best autumn colors are produced when dry, sunny days are followed by cool, dry nights.
Color may begin to appear in isolated spots in far northern New England the first week in September. Typically, the color change begins at the higher elevations and in the northern part of the region mid-September and moves southward through mid-to-late October, ending in southern New England coastal areas at the end of October.
Visitors who travel to see our spectacular foliage are known as, “Leaf-Peepers.” While on your excursion do stop at country stores, orchards, local restaurants and shops. We have suggested some routes for you to drive. We also suggest that you try some backroads. Get a local map, and don’t worry about getting lost. You’ll always bump into a main road sooner or, hopefully, later.
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