How Tall Do Cedar Trees Grow

Cedar species vary dramatically in mature height, with some reaching 200 feet while others stay under 50 feet. So, if you are wondering how tall do cedar trees grow, the honest answer is that it depends entirely on the specific variety, the climate, and the soil conditions. You cannot plant just any cedar and expect a giant; you need to match the tree to your landscape goals.

Before you dig a hole, you should know that the term “cedar” is a bit of a botanical mix-up. True cedars belong to the Cedrus genus, but many North American trees called cedars are actually junipers or arborvitaes. This confusion matters because their growth habits are totally different. In this guide, we will break down the real height ranges for the most common types, so you can plan your planting with confidence.

Let’s get straight to the numbers. The height of a cedar tree ranges from a modest 15 feet for a dwarf cultivar to a towering 200 feet for a wild Atlas cedar. Most garden varieties will settle somewhere between 40 and 70 feet, but you must check the tag at the nursery. A cedar that grows too large for your yard can cause foundation damage, blocked gutters, and constant pruning headaches.

Here is a quick breakdown of the main categories:

True Cedars (Cedrus): These are the giants. Expect 80 to 200 feet in the wild, but 50 to 80 feet in cultivation.
Eastern Red Cedar (Juniperus virginiana): A misnamed juniper. Usually 30 to 60 feet tall, sometimes a bit more.
Western Red Cedar (Thuja plicata): A massive arborvitae. Can hit 200 feet in old-growth forests, but typically 50 to 70 feet in yards.
Deodar Cedar (Cedrus deodara): A graceful true cedar. Grows 40 to 70 feet tall, with a wide spread.
Blue Atlas Cedar (Cedrus atlantica): A stunning blue-needled tree. Usually 40 to 60 feet tall.

True Cedars Versus False Cedars

You need to know the difference because it changes your expectations. True cedars (Cedrus) are native to the Himalayas and the Mediterranean. They have stiff, needle-like leaves and upright cones. These are the trees that can become massive, ancient specimens.

False cedars, like the Eastern Red Cedar, are actually junipers. They have scale-like leaves and berry-like cones. They grow faster when young but often top out at a smaller size. If you want a quick screen, a false cedar might be better. If you want a legacy tree, go with a true cedar.

For a practical example, consider the Deodar cedar. In a residential setting, it often grows about 1.5 to 2 feet per year. Over 30 years, that is a 60-foot tree. That is a lot of shade and a lot of fallen needles. Make sure you have the space before you commit.

Growth Rates By Species

Growth rate is not the same as final height. A tree can grow fast but stop early, or grow slowly for decades. Here is what you can expect from the most popular cedars:

Eastern Red Cedar: Grows 12 to 24 inches per year. Reaches 40 to 50 feet in about 50 years.
Western Red Cedar: Grows 24 inches per year in good soil. Can reach 100 feet in 60 years.
Deodar Cedar: Grows 18 to 24 inches per year. Reaches 50 feet in 25 to 30 years.
Atlas Cedar: Grows 12 to 18 inches per year. Reaches 60 feet in 40 years.
Cedar of Lebanon: Slow grower, 10 to 15 inches per year. Eventually reaches 80 feet, but takes a century.

These numbers assume full sun and well-drained soil. If you plant a cedar in heavy clay or shade, the growth will slow down significantly. The tree might survive, but it will not reach its potential height.

Soil And Water Impact On Height

Cedars are not fussy, but they hate wet feet. If the soil stays soggy, the roots will rot, and the tree will stay stunted. On the other hand, deep, loamy soil with good drainage encourages rapid root growth, which supports a taller trunk.

Watering is critical in the first three years. A young cedar needs about 10 gallons of water per week during dry spells. Once established, most cedars are drought-tolerant. However, a prolonged drought will slow growth and cause the needles to brown. You cannot force height without consistent moisture.

Another factor is competition. If you plant a cedar too close to other trees, it will stretch upward to reach sunlight. This makes it taller but weaker. A solitary cedar with plenty of room will grow shorter but thicker. For most homeowners, a sturdy, shorter tree is safer.

Climate And Hardiness Zones

Your local climate dictates how tall your cedar will get. True cedars prefer mild, dry summers and cool winters. They do not do well in hot, humid climates like the deep South. In those areas, they often struggle and stay under 30 feet.

Eastern Red Cedar is the most adaptable. It grows from zone 2 to zone 9. It can handle extreme cold and heat. This is why it is so common across the eastern United States. If you live in a harsh climate, this is your best bet for a taller tree.

Western Red Cedar loves the Pacific Northwest. It needs high humidity and cool temperatures. If you try to grow it in Arizona, it will not get past 20 feet. Always check your hardiness zone before buying. The tag will tell you the expected height in your region.

Factors That Limit Cedar Height

Even if you do everything right, your cedar might not hit the maximum height. There are several limiting factors that you cannot control. Understanding these will help you set realistic expectations.

Genetics play a huge role. A seedling from a 200-foot parent tree does not guarantee a 200-foot offspring. Many nursery trees are grown from seed collected from average specimens. You might get a shorter tree. If you want a specific height, look for a named cultivar like ‘Fastigiata’ which is columnar and narrower.

Wind is another factor. Constant strong winds cause the tree to allocate energy to root and trunk strength instead of vertical growth. Coastal cedars are often shorter and more twisted than inland ones. If you live in a windy area, expect a shorter tree.

Pests and diseases can also stunt growth. Bagworms, spider mites, and root rot are common issues. A healthy tree grows faster and taller. Regular inspection and treatment are necessary to maintain vigor.

Pruning To Control Height

You can control the height of your cedar with pruning, but you must do it correctly. Do not top the tree. Topping removes the central leader and creates a weak, bushy mess. Instead, you should prune the side branches to reduce the overall size while keeping the natural shape.

Here is a simple step-by-step approach:

Wait until late winter or early spring before new growth starts.
Identify the central leader (the main vertical trunk). Do not cut it.
Trim the side branches back by one-third, making cuts just above a lateral bud.
Remove any dead, diseased, or crossing branches entirely.
Step back and check the shape. It should look like a pyramid.

If you want to keep a cedar under 20 feet, you will need to prune every year. This is a lot of maintenance. Many homeowners prefer to plant a dwarf variety instead. Dwarf cedars like ‘Blue Mound’ or ‘Feelin’ Blue’ stay under 5 feet and require no pruning.

Landscape Planning For Tall Cedars

Before you plant, measure the space. A 60-foot cedar will cast a large shadow and drop a lot of needles. It will also have a root system that extends two to three times the width of the canopy. This can damage sidewalks and driveways.

Here are some placement tips:

Plant at least 15 feet away from your house.
Keep at least 10 feet away from driveways and patios.
Do not plant under overhead power lines.
Check local ordinances for tree height restrictions.
Consider the mature spread, not just the height.

If you have a small yard, choose a columnar variety. These grow tall but stay narrow. For example, the ‘Taylor’ Eastern Red Cedar grows to 30 feet but only spreads 6 feet. This gives you height without taking over the whole yard.

Measuring Your Cedar’s Height

If you already have a cedar and want to know its height, you can measure it without climbing. Use the shadow method or the stick method. The stick method is simple:

Hold a straight stick vertically at arm’s length.
Adjust the stick length so it matches the tree’s height visually.
Keep the stick at that length and turn it horizontally.
Measure the distance from the tree to the end of the stick’s shadow.
That distance is roughly the tree’s height.

This is not perfectly accurate, but it gives you a good estimate. For exact measurements, you can hire an arborist. They use a clinometer or laser to get precise numbers. This is useful if you are planning construction or selling the property.

Frequently Asked Questions

Here are some common questions about cedar tree height that we have not covered yet.

What Is The Fastest Growing Cedar Tree?

The Leyland Cypress is often called a cedar, though it is not a true cedar. It grows 3 to 4 feet per year. Among true cedars, the Deodar is the fastest, adding about 2 feet annually. If you need a quick screen, the Leyland is your best bet.

Can I Keep A Cedar Tree Short?

Yes, but it requires constant pruning. You must cut the side branches every year to maintain a small size. Alternatively, choose a dwarf cultivar that naturally stays under 10 feet. This is much less work and looks better in the long run.

Do Cedar Trees Have Invasive Roots?

Cedar roots are not typically invasive, but they are extensive. They spread wide to collect water. They can crack foundations if planted too close. Always give them plenty of space. A distance of 15 to 20 feet from structures is recommended.

How Long Does A Cedar Tree Live?

True cedars can live for 500 to 1000 years in ideal conditions. Eastern Red Cedars live about 150 years. Western Red Cedars can live over 1000 years. The lifespan depends on the species and the environment. A well-cared-for tree will outlive you.

Why Is My Cedar Tree Not Growing Taller?

Several reasons: poor soil, lack of sunlight, or water stress. Check the drainage and the amount of sun. If the tree is planted in a lawn, the grass might be stealing water and nutrients. Create a mulch ring around the base to reduce competition.

Final Thoughts On Cedar Heights

So, how tall do cedar trees grow? The answer ranges from 5 feet to 200 feet, depending on the species. You must do your research before planting. A cedar is a long-term commitment, and you cannot easily move it once it is established.

Take a moment to walk around your property. Look at the available space, the sun exposure, and the soil quality. Then, choose a cedar that fits your needs. If you want a low-maintenance tree, pick a dwarf or a slow-growing species. If you have a large property and want a statement tree, go with a Deodar or Atlas cedar.

Remember that a cedar’s height is not just about aesthetics. It affects shade, windbreak, and privacy. A taller tree provides more shade and better wind protection. But it also requires more space and creates more leaf litter. Balance your desires with the practical realities of your yard.

If you are still unsure, talk to a local nursery or an arborist. They can recommend the best cedar for your specific climate and soil. They can also tell you the expected mature height for your area. This is the safest way to avoid a costly mistake.

In the end, growing a cedar is a rewarding experience. These trees are majestic, fragrant, and long-lived. With the right care, your cedar will reach its full potential and provide beauty for generations. Just give it the space it needs, and it will reward you with years of shade and grace.

One last tip: do not plant a cedar too deep. The root flare should be visible at the soil surface. Planting too deep is a common cause of stunted growth and early death. Follow the planting instructions carefully, and your cedar will thrive.

We hope this guide has answered your questions about cedar tree heights. Now you can make an informed decision and enjoy your tree for many years to come. Happy planting, and remember to measure twice, plant once.