If you’re planning your landscape or simply curious about these iconic trees, you likely want to know how tall do cedar trees grow. The majestic height a cedar tree can reach is largely determined by its specific species and growing conditions.
This guide will give you clear answers. We’ll cover the typical heights for popular cedar types, from garden varieties to forest giants.
You’ll also learn what factors influence their growth. This includes soil, climate, and care practices.
Understanding this helps you choose the right tree for your space. It also sets realistic expectations for its future size.
How Tall Do Cedar Trees Grow
There is no single answer, as “cedar” refers to several distinct groups of trees. True cedars belong to the genus *Cedrus*, while many trees commonly called cedars in North America are actually part of the cypress or juniper families.
Their potential height ranges dramatically. Some stay shrub-like, while others become towering forest monarchs.
Here is a breakdown of the mature heights you can expect from the most common trees known as cedars.
True Cedars (Genus Cedrus)
These are the classic, old-world cedars often referenced in history. They are known for their large, spreading form and aromatic wood.
Atlas Cedar (Cedrus Atlantica)
The Atlas cedar is a hardy species native to the Atlas Mountains. It has a distinctive, somewhat open and pyramidal shape when young.
In its native habitat, it can reach 100 to 120 feet tall. In cultivation, like in parks or large estates, it more commonly grows 40 to 60 feet.
Its blue-green to silvery-blue foliage is a standout feature. This makes the ‘Glauca’ variety particularly popular.
Deodar Cedar (Cedrus Deodara)
Often called the Himalayan cedar, this species is graceful with drooping branchlets. It’s a fast-growing true cedar.
In optimal conditions, it can soar to 150 feet or more. In landscape settings, a height of 50 to 70 feet is more typical over several decades.
It prefers warmer climates and is less cold-hardy than other true cedars. Its sweeping form makes it a beautiful specimen tree.
Lebanon Cedar (Cedrus Libani)
This is the famous cedar of historical significance. It’s known for its broad, flat-topped crown at maturity.
Mature trees in the wild can reach 80 to 130 feet in height. Their horizontal branching structure is iconic and wide-spreading.
It grows relatively slowly. The Lebanon cedar is a symbol of strength and longevity.
Common “False” Cedars Of North America
These trees are not botanically true cedars, but they are universally called such. They are incredibly important ecologically and commercially.
Western Red Cedar (Thuja Plicata)
This is a giant of the Pacific Northwest. It’s a key species in temperate rainforests.
In dense, moist coastal forests, it routinely grows 150 to 200 feet tall. Some ancient specimens exceed 230 feet.
It has fibrous, reddish-brown bark and aromatic, scale-like leaves. Western red cedar is highly valued for its rot-resistant wood.
Eastern Red Cedar (Juniperus Virginiana)
This is actually a juniper. It’s one of the most widespread conifers in eastern North America.
Its height is more modest compared to western giants. It typically grows 40 to 50 feet tall, though can reach 90 feet in perfect conditions.
It’s a pioneer species, often one of the first trees to colonize open fields. Its wood is used for cedar chests and pencils.
Northern White Cedar (Thuja Occidentalis)
Also known as arborvitae, this tree is common in cooler, swampy areas. It’s also widely planted for hedges.
In the wild, it can grow 40 to 70 feet tall. Cultivated varieties for landscaping are often much shorter, bred for specific shapes and sizes.
It prefers moist soils and is a favorite food for deer. Its foliage is flat and fan-like.
Alaska Yellow Cedar (Callitropsis Nootkatensis)
This tree has a narrow, graceful form with drooping branches. It thrives in cool, maritime climates.
In its coastal range from Alaska to Oregon, it commonly reaches 80 to 120 feet in height. The wood is bright yellow and very durable.
It’s often found at high elevations. Its timber is prized for specialty woodworking.
Factors That Influence Cedar Tree Height
Why do some cedars become skyscrapers while others stay small? Several key elements work together to determine a tree’s ultimate stature.
Species Genetics
This is the most fundamental factor. The genetic blueprint of the species sets the potential height range.
A Western red cedar is genetically programmed to be a giant. An Eastern red cedar has a much lower inherent ceiling.
When selecting a tree, research its genetic potential first. This ensures it will fit your space when mature.
Sunlight Availability
Cedars are generally sun-loving trees. Maximum height is achieved with full, direct sunlight for most of the day.
In dense forest competition, trees grow taller and straighter as they race for the sun. In open landscapes, they may grow broader but still reach good height if sunlight is ample.
Plant your cedar in the sunniest location available. Partial shade can significantly stunt its growth potential.
Soil Quality And Drainage
Soil provides the physical support and nutrients for growth. Most cedars prefer deep, moist, but well-drained soil.
- Depth: Deep soil allows for extensive root systems, which support taller growth.
- Nutrients: Rich, loamy soil with organic matter fuels faster, healthier growth.
- Drainage: While some cedars tolerate wet soil, most dislike “wet feet.” Poor drainage can lead to root rot and stunted growth.
- pH: Slightly acidic to neutral pH is generally preferred, though many are adaptable.
Water And Climate
Consistent moisture is crucial, especially for young trees. Annual rainfall and temperature define a tree’s hardiness zone.
Western red cedars thrive in the cool, humid, rainy Pacific Northwest. Atlas cedars are adapted to drier mountain climates with good winter chill.
Match the tree species to your local climate. A tree struggling outside its ideal zone will never reach its full height potential.
Available Space
A tree’s roots typically spread as wide as its canopy. Constricted space, like near buildings or paved areas, limits root expansion.
This root restriction directly limits the tree’s ability to uptake water and nutrients. The result is a shorter, potentially stressed tree.
Always plant with the mature canopy width in mind. Give the roots plenty of room to grow outward.
Growth Rate And Longevity Of Cedar Trees
Height is achieved over time. Understanding growth rates helps you plan for the future.
Typical Growth Rates
Cedar growth rates vary from slow to moderately fast.
- Fast-Growing: Deodar cedar and Western red cedar can grow 1.5 to 3 feet per year under ideal conditions when young.
- Moderate-Growing: Atlas cedar and Northern white cedar often grow about 1 foot per year.
- Slow-Growing: Some dwarf cultivars or species in poor conditions may grow only a few inches annually.
Growth is usually fastest in the tree’s early decades. It slows down significantly as it approaches its maximum age.
How Long They Live
Many cedars are famously long-lived. This longevity allows them to reach great heights over centuries.
- Western Red Cedar: Can live over 1,000 years. Ancient trees are the tallest.
- True Cedars (Atlas, Lebanon, Deodar): Often live 500 to 1,000 years in their native ranges.
- Eastern Red Cedar: Has a shorter lifespan, typically 150 to 300 years.
A tree’s age is a direct contributor to its height. The oldest specimens are usually the tallest.
Practical Considerations For Planting Cedar Trees
Before you plant, think ahead. Choosing the right tree and location prevents future problems.
Selecting The Right Species For Your Goals
Ask yourself what you want from the tree.
- Privacy Screen or Hedge: Choose columnar varieties of Northern white cedar or ‘Emerald’ arborvitae. They grow 10-20 feet tall.
- Large Specimen or Shade Tree: Consider a Deodar or Atlas cedar if you have ample space. They provide dramatic focal points.
- Wildlife Habitat: Eastern red cedar provides excellent bird cover and berries.
- Small Garden Accent: Look for dwarf cultivars like ‘Blue Atlas’ cedar weeping forms. These stay under 10 feet.
Planting For Maximum Health And Height
Proper planting gives your tree the best start.
- Dig a Wide, Shallow Hole: Make it 2-3 times wider than the root ball, but no deeper.
- Handle Roots Carefully: Loosen pot-bound roots gently. For balled-and-burlapped trees, remove any wire or synthetic burlap after placing in the hole.
- Plant at the Correct Depth: The root flare (where trunk widens at the base) must be level with or slightly above the soil surface. Planting too deep is a common mistake that can kill the tree.
- Backfill with Native Soil: Avoid amending the soil in the hole excessively; it can discourage roots from expanding into surrounding ground.
- Water Deeply and Mulch: Water thoroughly after planting. Apply 2-3 inches of mulch around the base (not touching the trunk) to retain moisture.
Ongoing Care And Maintenance
Consistent care supports healthy growth.
- Watering: Water deeply and regularly for the first 2-3 years, especially during drought. Established cedars are somewhat drought-tolerant but grow best with consistent moisture.
- Fertilizing: Usually not necessary if planted in good soil. If growth is poor, a balanced, slow-release fertilizer in early spring can help.
- Pruning: Cedars generally require little pruning. Remove dead, damaged, or diseased branches. For hedges, shear in early summer. Avoid cutting back into old wood that has no green growth, as it may not resprout.
- Monitoring for Pests/Diseases: Watch for bagworms on arborvitae, cedar-apple rust on Eastern red cedar, or root rot in poorly drained soils. Early intervention is key.
Frequently Asked Questions
What Is The Tallest Cedar Tree Ever Recorded?
The tallest recorded cedars are Western red cedars. The current known champion is the “Cheewhat Lake Cedar” in British Columbia, measuring over 159 feet tall with a massive trunk volume. Historical records suggest some may have approached 200 feet.
How Fast Do Cedar Trees Grow Per Year?
Growth rate depends on species and conditions. Fast growers like Deodar cedar can add 2-3 feet per year when young. Most common landscape cedars grow 1-2 feet annually. Slow dwarf varieties may grow less than 6 inches.
Can I Control Or Limit The Height Of A Cedar Tree?
You can, but it’s not ideal. Topping a cedar (cutting off the main leader) ruins its natural shape and makes it prone to disease and weak growth. It’s better to choose a dwarf or smaller species from the start rather than trying to stunt a large-growing tree.
What Is The Difference Between A True Cedar And A False Cedar?
True cedars (*Cedrus*) have clusters of needles and large, upright cones. They are native to the Himalayas and Mediterranean. False cedars (like Western red cedar or Eastern red cedar) have scale-like leaves and different cone structures. They belong to other botanical families but share aromatic, durable wood.
How Can I Estimate The Age Of A Tall Cedar Tree?
Accurate aging requires counting rings from a core sample. Without that, you can only make rough estimates. Measure the trunk’s diameter at chest height. For a rough guess in a forest setting, some foresters use a growth factor (e.g., diameter x 5). However, growth rates vary too widely for this to be reliable. Very tall, massive cedars are almost always centuries old.