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How Long Does It Take An Oak Tree To Grow?

Depending on the species, Oak trees have different maturity levels and periods.

Some will reach 100 feet tall, while others will only reach 80 feet. Some will measure 80 feet wide, while others will measure 60 feet wide.

This predominantly depends on the species. However, before looking at the time it takes for an Oak tree to fully mature, we need to understand what we mean by an ordinary Oak tree.

An Oak tree is another hardwood tree species that is exceedingly strong and durable.

The hardwood properties of the Oak tree makes it an ultimate choice when it comes to furniture making, flooring, and veneer production.

How long does it take an Oak tree to grow

Oak trees vary according to the location/continent they are found.

Africa’s oak trees are slightly different from the Unites States Oak trees. However, you need to understand that more than half of the 600 species available are native to North America.

The rate, level, and time of maturity depends upon many significant factors.

Tree species, climate, water, and soil nutrients play critical roles in determining the time it takes for a tree to mature fully.

In this article, we will look at the insights into understanding the average time it takes for an Oak tree to mature fully.

So, let us answer an important question that many homeowners ask.

What Is The Average Time It Takes An Oak Tree To Grow?

The average time for an Oak tree to fully grow, regardless of the species, is approximately 30-35 years.

By the 30th year, an ordinary Oak tree will assume a taller stature and a thicker diameter.

This, however, depends on the above four factors that we had earlier mentioned; species, climate, water, and soil nutrients.

Full maturity, however, can be reached after years of continued slow growth. A fully mature oak tree will have its canopy spread to about 45-50 feet.

1. The Rate Of Growth Depends On The Soil Conditions

Favorable Vs. Unfavorable Soil Conditions

Favorable soil conditions should include; good soil tilth, adequate, but not extreme, nutrient supply, minimum plant pathogens, and insect pests, ample soil drainage, and No chemical composition in the soil.

Unfavorable soil conditions that can alter the growth rate of Oak trees include; poorly graded, dry, and cohesion-less soils.

2. Rate Of Growth Depending On The Species

There are approximately 600 different species of Oak trees according to scientific research. All these species vary significantly.

This variation alters the rate at which the particular tree reaches its full maturity. Below are common Oak tree species and their maturity periods

  • Red Oak trees
  • White Oak trees

The Red Oak trees include black Oak, Willow Oak, Water Oak, Japanese evergreen Oak, and Pin Oak. The White Oak trees include Post Oak, Chinkapin, and Bur Oak.

What Are The Significant Differences Between A Red Oak Hardwood And White Oak Hardwood?

  1. Color – red Oak assumes a pinkish tint than White Oak. White oak hardwood tends to be lighter, browner, and more yellow.
  2. Graining – A red oak hardwood has a stronger graining than a white oak hardwood. However, White oak hardwood assumes a smoother appearance.
  3. Hardness – A white oak flooring is a bit harder than red Oak.

According to the Janka hardness scale, a White oak hardwood measures approximately 1350 degrees while a red oak measures around 1250 degrees.

You should note that red oak hardwoods are less hard and tend to show dents a bit less.

The White Oak tends to grow slow. This tree species will only stand between 10-15 feet tall and 20-25 feet wide after 10 or 12 years.

A mature White Oak reaches a height of 50-100 feet and 50-80 feet wide.

The full maturity happens after 30-40 years because it takes the tree a growth rate of 1-2 feet per year.

Growth Period

The Red Oak tends to grow a bit faster than the White Oak. Most Red Oak species will stand between 13-20 feet tall and 25-30 feet wide after 9 to 11 years.

A mature red Oak reaches a height of 60-80 feet and 60-70 feet wide.

The full maturity happens after 30 years because it takes the tree a growth rate of 2 feet per year.

How To Tell The Age And Growth Period Of An Oak Tree Without Cutting It

There are five simple ways you can use to say to the age of an Oak tree.

  • First, identify the exact species of Oak (red or white) in your yard.
  • Carefully measure the Oak’s trunk circumference.
  • Calculate the diameter of the Oak using the formula Where C is the circumference and π= 3.14
  • Determine the growth factor for your oak tree. The White and Red Oak’s growth factor is 5
  • Finally, you should multiply the Oak’s diameter (in inches) by the growth factor to get the approximate age of your oak tree.

An Oak Tree’s Life Cycle With Its Age

An Oak tree can live up to 1000 years if it does not face destruction/hazardous threats. As the tree grows older and older, it tends to produce more acorns.

However, at 700 years of age, the tree is considered old and will produce fewer to no acorns.

When the Oak tree inches closer to a thousand years, it will start to die slowly. During this period, some branches will dry, and the bark of the tree will become weak and fall out easily.


We cannot say that we know the exact time an Oak tree can be considered fully grown. This will primarily depend on the factors that have been mentioned above.

It is only an approximation of the Oak’s age that can be achieved with ease.

Quick Facts About Oak Trees:

  • Oak trees do best in sunny locations.
  • Oak trees do best in slightly acidic soils.
  • Most oak trees will not produce a good crop until they are around 50 years of age.
  • Over its entire lifespan (more than 500 years), an ordinary oak tree can produce as many as 9.5 million acorns.