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Why Falling Leaves? As winter descends, trees in temperate and boreal zones face punishingly cold temperatures and frigid winds, conditions that would damage leaves, so trees have to reduce themselves to their toughest parts—stems, trunks, branches, bark. Leaves must fall.
In temperate regions of the world, autumn is marked by the brightly colored foliage that slowly drops from trees and shrubs to carpet the ground. But why do some plants shed their leaves before winter? It turns out autumnal leaf drop is a form of self-protection.
Trees are more proactive than that. They throw their leaves off. Instead of calling this season "The Fall," if trees could talk they'd call this the "Get Off Me" season. Here's why.
There are three general reasons why trees lose their leaves early. The canopy is crowded. Some trees may have grown more leaves than they can support, so they drop leaves to conserve water in hot, dry weather. It's a pest or disease. See what summer pest could be hurting your tree leaves.
Leaf shedding, or abscission, is an essential survival strategy that allows trees to conserve resources, protect themselves from the stresses of winter, and prepare for regrowth in the spring. This article takes a look into why trees lose their leaves in the fall, examining the biological and environmental mechanisms that drive this process.
Simply, trees actively shed their leaves because there’s no use for them anymore. Doing this also ensures the tree’s long-term survival. If it didn’t do it every year, the water in the cells of...
Most of us know that certain types of trees (deciduous ones) are going to lost their leaves in the fall. We look forward to the colorful display they put on during the fall foliage season just before the leaves drop, but we spend the next several months looking at stark, bare branches.
This is why they provide the last colour we see before the leaves fall from trees. Trees lose their leaves to conserve energy during winter. As we head towards the colder months, at the base of each leaf stalk – where it attaches to the branch – cells form an abscission layer.
One of the most common visuals of fall is the sight of red, orange and yellow leaves falling from trees and coloring the ground. However, why this happens is not as well known.
Why some leaves fall off... Broadleaf trees are responsible for the colorful annual display that defines autumn. For most of the year, a bright green chemical called chlorophyll supports photosynthesis in leaves.