How Does a Tree Heal

A tree forms callous tissue to cover wounds.  How quickly a tree heals depends on the size of the wound and where it’s cut.

The Sugar Maple cross-section at the top of this post shows a well healed wound.  You can see the cut and the callous tissue that closed the wound.

Below is the same wound from the outside.

Maple Tree Scar Tissue

This Choke Cherry stump grew around suckers cut years before.  I can’t say the tree was ‘healing’ but the picture demonstrates how a tree envelops objects.

Cherry Tree Embedded Growth

In elementary school we’re taught to count a trees rings to learn the trees age.  Growth rings also give us a clue to a trees health.

The growth rings on this White Oak are very close for many years.  There may have been a drought, lighting strike or a pest attacking the tree.

Narrow Growth Rings

The rings are so close because the tree was healing from pruning and lost a lot of its canopy causing stunted growth.

The Three Cut Method of Pruning

When splitting wood I see all kinds of neat things demonstrating how trees grow.  The video below showcases healed wounds and shows the three cut method for pruning trees.

If you just want to learn about the three cut method skip to the second half of the video.

Prune Lawn Trees High

I just returned from an evening walk with Theo and my forehead burns from a fresh scratch.

Theo walked around a tree four feet from the road.  As I went around the back a branch caught me 3 inches above the eyes.

I did have a flashlight.  I was looking at the ground for footing and suddenly smack!

This is a great example of why it’s so important to prune lawn trees above people’s heads.  Assume folks will be walking in the dark and can’t see where they’re going.

People driving down the street or your driveway also appreciate not having their cars scratched.

A final friendly tip.  Don’t leave stubs on a tree, especially at eye height, where someone can lose an eye.

Theo the Great Pyrenees Mix Pupply
Theo our Great Pyrenees mix puppy.  He’s 90 lbs at just over a year old.  What a sweetheart.  He loves people, dogs, cats and creatures of all shapes and sizes.