Why do some trees lose leaves in the fall, whereas others don’t?

The bigger the leaf the sooner they will fall off.  The leaf’s help brings the sun nutrients to the tree.  As the seasons change so does the earth’s position with the sun.  The season gets colder, it no longer is helping the tree to grow.  The natural instinct of the tree is to lose the leaves so that it can focus on survival.

Evergreen type trees are the known tree we use for Christmas.  Probably because it is still alive when everything else is bare in the winter.  [In Australia, when Christmas comes around, it is Summer.  So, they decorate Christmas bushes.] So why are these trees living year-round?   What happens to the trees that lose their leaves in the fall?  There are two types of trees we will talk about.

Evergreen or Deciduous

group of Evergreen trees in the winter

Evergreen Source: David Wagner via Public Domain Pictures

Evergreens are trees that lose leaves slow enough that they regenerate new leaves to replace lost ones.  The lost leaves feed the right nutrition back to the tree.  Their leaves begin to fold inward when there is a lack of sun to provide for the tree.  Also, they have a special wax-like coating on the leaf that protects, it more.

Evergreen types are:

  • Pine
  • Live Oak
  • Spruce
  • Juniper
  • Norway Spruce
  • Fir
  • Leyland Cypress
Deciduous tree

Deciduous Trees Source: mholopainen7 via Pixabay

Deciduous trees leaves are different.  They count on the environment to give the nutrition to provide for the leaves.  When their leaves drop, they can be blown away so they don’t get fed the right nutrition needed to help it survive drought or cold.

Deciduous examples:

  • Maple
  • Oak
  • Cottonwoods
  • Poplar
  • Apple
  • etc.

Looking for signs

So, why are we talking, about trees?  What do trees have to do with weather?

Child throwing leaves up in the air

Source: Pxhere

Trees, like humans, count on water to survive.  When a tree goes through a lack of continued water, it goes into survival mode.  Leaves usually are first to go.  Whether it is drought or freezing temperatures, trees tell us what is going on.  We always look for those first signs.

Image Resource: Featured Image Source https://pixabay.com/en/tree-seasons-spring-summer-autumn-776932/https://www.publicdomainpictures.net/en/view-image.php?image=13878&picture=evergreen-trees-and-bushes-in-snowhttps://pixabay.com/en/tree-tops-deciduous-trees-greenery-1634793/https://pxhere.com/en/photo/588265

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