Why leaf change color & fall down ?
Wednesday Oct 20th, 2021
Did you know WHY leaf change color & fall down ?
It’s called a Chlorophyll Breaks Down.
Every autumn we revel in the beauty of the fall colors. The mixture of red, purple, orange and yellow is the result of chemical processes that take place in the tree as the seasons change from summer to winter.
WHY LEAF ARE GREEN IN SPRINT & SUMMER??
During the spring and summer, the leaves have served as a kitchen for that tree where most of the foods necessary for the tree's growth are prepared. This food-making process takes place in the leaf in numerous cells containing chlorophyll, which gives the leaf its green color. This extraordinary chemical absorbs from sunlight the energy that is used in transforming carbon dioxide and water to carbohydrates, such as sugars and starch to use for plant to grow.
Along with the green pigment are yellow to orange pigments, carotenes and xanthophyll pigments which, for example, give the orange color to a carrot. Most of the year these colors are masked by great amounts of green coloring.
WHY LEAF CHANGE THEIR COLOR IN FALL & WINTER??
Because of changes in the length of daylight and changes in weather temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappearing and turn into yellow and than orange colors become visible and give the leaves part of their fall splendor.
WHY leaf starts falling down from trees ?
As the fall colors appear, other changes are taking place. At the point where the stem of the leaf is attached to the tree, a special layer of cells develops and gradually severs the tissues that support the leaf. At the same time, the tree seals the cut, so that when the leaf is finally blown off by the wind or falls from its own weight, it leaves behind a leaf scar. In the Botany Science and Horticulture, this process is called ABSCISSION.
The life cycle of a leaf is just that, a cycle that is dictated by the seasons. It is "born," or develops then reaches its maturity as a leaf from spring to summer ; then it dies in fall to winter season.
Some trees are EVERGREEN, like conifers - pines, spruces, firs, hemlocks, cedars, etc. - are evergreen in both the North and South. The needle- or scale-like leaves remain green or greenish the year round, and individual leaves may stay on for two to four or more years
If you are nature lover and looking for outdoor adventure in this fall to view beautiful and colorful trees, you can check these websites below to find out more details with areas and the current leaf color. Websites shows current updates with change in leaf color on the Ontarion Map, including Toronto Area. Very helpful for planning a travel trip. You can plan your visit, accordingly within area of your choice tree color you like to view. isn't is cool ?
No time for long drive or a day trip, no worries, just to have long walk into the nearby parks & trails is also a great idea to enjoy colorful nature in this fall. Being with nature is a wonderful feelings & relaxation, We should get it once in a while or frequently if possible. What do you think ?
Fall Breeze & Autumn Leaves.
Have a Happy Fall Season!
(some info source from esf.edu)