Early Fall Color Could Be Sign of Tree Distress
Early Fall Color Could Be a Sign of Tree Distress
In many parts of North America, people will soon enjoy one of nature’s finest shows – fall foliage. Color-changing leaves make for a beautiful display, but Early Fall Color Could Be a Sign of Tree Distress and is vulnerable to insect and disease attacks.
If the leaves on your trees are changing color sooner than similar trees in the area, consult a professional arborist, who can identify any problems and offer possible solutions.
“Premature color change can be an indication that a tree isn’t vigorous enough to withstand insects and disease organisms that may attack it, not to mention the usual changes that occur when the weather turns cold,” says Tchukki Andersen, BCMA, CTSP* and staff arborist with the Tree Care Industry Association. “Occasionally, only one or two limbs of the tree will show premature fall color. This could be a sign of a disease at work, though only the infected limbs are weakened.”
The more common situation is for the entire tree to exhibit premature fall coloration, a phenomenon usually linked to root-related stress. Trees respond to these stresses by trying to curtail their above-ground growth.
Leaves can be thought of as small factories containing raw materials, products, and by-products, all in chemical form and some with color. As the leaf is “abandoned” by the tree, the green chlorophyll – the dominant chemical found in most leaves – is broken down and “recycled,” leaving behind other-colored chemicals. Supply lines to the leaves also become clogged, affecting which chemicals are left in the leaf: If the major chemical remaining in the abandoned leaf is red, the leaf turns red; if it’s yellow, the leaf turns yellow, and so on.
The yearly variation in color intensity is due to fluctuating weather conditions, which can affect the balance of chemicals and their composition in the leaves. Differing amounts of rainfall, sunlight, temperature, humidity, and other factors may have an effect on how bright and how long the “leaf-peeping” season will be in any given year.
What to do
Take a look at the entire tree. See if there are visible signs of damage to the roots, trunk, and/or branches.
A professional arborist like Johnson Ops Tree Care can assess your tree and landscape and work with you to determine the best course of action, if necessary. A professional arborist can also recommend treatments, including planting new trees, correcting soil deficiencies, increasing water and nutrients, monitoring for pests, or providing pest management.