As the autumn season arrives, the dramatic display of colorful leaves is a great reason to hit the open road and do some leaf peeping. In the words of Albert Camus, “Autumn is a second spring when every leaf is a flower.” Whether you opt for a leisurely drive around town, take a day trip somewhere close by or head out on an epic road trip, gazing at spectacular fall foliage is a feel-good activity that’s free to enjoy. What more can you ask for?
Why Do Leaves Change Color?
Trees, vines, bushes and shrubs dress themselves up in a dazzling rainbow of colors for the fall – but have you ever wondered how they make this magic happen? As summer fades into fall, the days get shorter, meaning there are fewer hours of sunlight. The lack of sunlight and increasingly cooler nights is a signal to the leaves to stop producing chlorophyll, which is the pigment that gives leaves their green coloring the rest of the year. As the chlorophyll breaks down, other pigments appear, creating the beautiful ranges of reds, purples, yellows and oranges that you see in the autumn.
When Will Leaves Start to Change?
Officially, autumn begins on September 22nd, but you won’t really know it by looking at the trees in most parts of the country. Although the transition away from green varies slightly from year to year and depends on how long it takes the warm summer temperatures to fade, trees in the most northern parts of the country start to get a touch of fall color by mid-September.
The transition to color slowly progresses into the middle and lower regions of the country, as trees transform in the following weeks. As you might expect, the warmer regions of the country see the transition later in the year, with the first changes arriving in early-to-mid October.
The first signs of fall color will always be detected in the most northern parts of the country – and also in the most elevated regions. For example, in Great Smoky Mountains National Park, colors change as early as the first or second week of September where the elevation is over 4,000 feet. The forested areas below this level remain mostly green until about mid-October.
The Look of Autumn Where You Are
While viewing the fall foliage is a popular annual ritual for anyone in the New England area, those living in places like Arizona or southern California aren’t used to experiencing a dramatic change in seasons. How flashy the local fall foliage will be – or not – depends on the kinds of trees that grow in your area.