What You'll Learn
Getting the spacing right when you plant cedar trees for privacy is the single most important decision you'll make for your natural screen. Plant them too far apart and you'll have gaps for years. Too close and they'll compete, weaken, and die off. In this guide, you'll learn the exact spacing for each cedar variety, how site conditions change your plan, and how to lay out your planting line before you dig a single hole.
Most homeowners underestimate how much mature tree width affects the final result. A cedar that looks small in a nursery pot can spread 6 to 10 feet wide at full size. Understanding that number before you plant is what separates a solid privacy wall from a patchy disappointment that takes a decade to fix.
Why Spacing Matters More Than You Think
Cedar spacing is not just about aesthetics. It directly affects the long-term health of every tree in your row. Trees planted too close will eventually compete for water, nutrients, and light. The weakest trees in the group will thin out, die from the bottom up, or become vulnerable to disease and pests.
On the flip side, trees spaced too far apart leave persistent sightline gaps. Even fast-growing varieties take years to fill a 10-foot gap with dense foliage. Getting spacing right from the start saves you money, time, and the frustration of replanting.
Correct spacing allows full canopy development while overcrowding causes thinning and die-off.
How Cedar Growth Habits Affect Spacing Decisions
Every cedar variety has a mature spread — the width of the canopy at full size. That number is your baseline for spacing decisions. If a tree reaches 6 feet wide at maturity, planting two of them 4 feet apart means their canopies will eventually collide and compete. A good rule of thumb is to space trees at 50 to 75 percent of their mature spread for privacy purposes.
Columnar varieties like Emerald Green Arborvitae have a narrow spread of 3 to 4 feet, which is why they can be planted much closer together. Broader varieties like Eastern Red Cedar can reach 8 to 10 feet wide and need significantly more room. Always check the mature spread on the plant tag or product description before you buy.
The Difference Between a Privacy Screen and a Windbreak
Privacy screens and windbreaks serve different purposes, and confusing the two leads to poor planting plans. A windbreak is designed to slow air movement across a large area. It typically uses staggered rows with wider spacing between trees to allow some airflow through the canopy.
A privacy screen is designed to block sightlines completely. It needs tighter spacing and denser canopy coverage at eye level. If your goal is visual privacy from neighbors or the street, plan for tighter spacing than a windbreak guide would suggest. For more on privacy trees that also function as windbreaks, the approach changes slightly when you need both benefits.
Recommended Spacing Guidelines by Cedar Variety
Spacing is not one-size-fits-all. The right distance between trees depends entirely on which cedar species you are planting. The table below gives you a practical starting point for the most commonly planted privacy cedars.
| Cedar Variety | Mature Height | Mature Spread | Privacy Spacing |
|---|---|---|---|
| Eastern Red Cedar | 30–40 ft | 8–10 ft | 6–8 ft apart |
| Western Red Cedar | 50–70 ft | 10–15 ft | 8–10 ft apart |
| Emerald Green Arborvitae | 12–14 ft | 3–4 ft | 3–4 ft apart |
| Thuja Green Giant | 30–40 ft | 8–12 ft | 5–8 ft apart |
Different cedar varieties require very different spacing to achieve a solid privacy screen.
Eastern Red Cedar and Western Red Cedar Spacing
Eastern Red Cedar is a tough, drought-tolerant native that works well across a wide range of climates. For a solid privacy screen, plant them 6 to 8 feet apart. This gives each tree enough room to develop a full canopy while keeping gaps small enough to block sightlines within 3 to 5 years of establishment.
Western Red Cedar is a much larger tree and needs more breathing room. Space these at 8 to 10 feet apart for privacy. They grow quickly once established and will fill in gaps effectively, but crowding them causes lower branch dieback that ruins the privacy effect at eye level.
Pro Tip
For Eastern Red Cedar, planting at 6 feet apart gives you faster coverage than 8 feet, with only a modest increase in long-term competition risk. If you want quicker privacy and are willing to thin a few trees in 10 to 15 years, go with the tighter spacing.
Emerald Green Arborvitae and Thuja Green Giant Spacing
Emerald Green Arborvitae is one of the most popular privacy trees in North America for good reason. Its narrow, columnar shape means you can plant it as close as 3 feet apart and still give each tree enough room to thrive. At 3 to 4 feet apart, you will have a dense, gap-free screen within 2 to 3 years. Learn more about Emerald Green Arborvitae and how it performs as a privacy screen.
Thuja Green Giant is a faster-growing option that can reach 3 to 5 feet per year under good conditions. For privacy, space them 5 to 8 feet apart. The 5-foot spacing gives quicker coverage but may require thinning as the trees mature. The 8-foot spacing is better for a long-term, low-maintenance planting. For a deeper comparison, see Thuja Green Giant vs Emerald Green Arborvitae for privacy.
How Row Configuration Changes Your Spacing Math
A single row of cedars is the most common planting approach, but a staggered double row gives you a much denser screen with wider individual spacing. In a double-row layout, you plant two parallel lines of trees with each tree in the back row offset to fill the gaps in the front row.
With a staggered double row, you can space each tree 8 to 10 feet apart within its row while still achieving complete sightline coverage. The rows themselves should be 6 to 8 feet apart. This approach works especially well for larger properties where you want depth and density without overcrowding individual trees.
Factors That Should Adjust Your Spacing Plan
Standard spacing guidelines are a starting point, not a hard rule. Your specific site conditions may require you to tighten or widen your spacing to get the best results. Ignoring these factors is one of the most common mistakes homeowners make when planting a privacy screen.
Soil Quality and Root Competition
In rich, well-draining soil, cedars develop strong root systems quickly and can handle tighter spacing. In compacted, clay-heavy, or nutrient-poor soil, trees need more space between them to access adequate water and nutrients without competing. Planting too close in poor soil accelerates stress and increases the chance of disease.
If your soil is poor, add 2 feet to your standard spacing and amend each planting hole with compost. According to Clemson University's tree planting guidance, proper soil preparation at planting time has a greater impact on long-term tree health than almost any other factor.
Caution
Avoid planting cedar trees in low-lying areas where water pools after rain. Waterlogged roots are one of the leading causes of cedar decline, especially in the first two years after planting when root systems are still establishing.
Sun Exposure and Wind Patterns
Cedars planted in full sun grow faster and develop denser canopies than those in partial shade. If your planting site gets less than 6 hours of direct sun per day, expect slower growth and thinner foliage. In shaded sites, tighten your spacing by 1 to 2 feet to compensate for reduced canopy density.
Wind exposure also matters. Trees on the windward side of a property face more stress and may grow more slowly or lean over time. In high-wind areas, use stakes for the first year and consider tighter spacing so trees can support each other as the canopy fills in.
How to Plan and Mark Your Cedar Planting Layout
Planning your layout on paper is good. Marking it on the ground before you buy trees is better. A simple staking process takes about an hour and prevents the kind of spacing errors that take years to correct. According to the Arbor Day Foundation's planting guidance, proper pre-planting layout is one of the most overlooked steps in successful tree establishment.
Staking your planting line before digging ensures accurate, even spacing across the full row.
Measuring and Staking Your Planting Line
Mark the Start and End Points
Drive a stake at each end of your planting line. Run a string between them taut and level. This is your baseline for all measurements.
Measure Your Spacing Intervals
Using a tape measure, mark each tree position along the string at your chosen spacing distance. Drive a small flag or stake at each mark.
Check Distances from Structures
Measure from each stake to your fence, property line, and any underground utilities. Adjust positions as needed before you dig.
Count and Order Your Trees
Count your stakes to get an exact tree count. Order that number plus one extra in case of damage during planting or shipping.
Timing Your Planting for Fastest Privacy Results
Fall and early spring are the best times to plant cedar privacy screens. In fall, the soil is still warm enough to encourage root growth before the ground freezes. In spring, trees have the full growing season ahead to establish before summer heat arrives. Both windows give cedars a significant head start over summer planting.
Summer planting is possible but requires more consistent watering. Avoid planting in extreme heat or drought conditions. If you must plant in summer, do it in the evening and water deeply every 2 to 3 days for the first month. For a full breakdown of the best planting windows, see our guide on when to plant privacy trees.
Ready to Build Your Privacy Screen?
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Thuja Green Giant
Emerald Green Arborvitae
Cryptomeria Radicans
Build Your Screen Right the First Time
Matching your cedar variety to the right spacing based on your privacy goals and site conditions is what separates a thriving screen from a patchy disappointment. The numbers in this guide are proven starting points, but your soil, sun, and wind conditions will refine the final answer for your yard.
Start with a staking layout, confirm your distances from structures and property lines, and choose a variety suited to your climate and available space. Plant in fall or early spring for the fastest establishment. A well-spaced cedar row planted correctly today will give you decades of dense, reliable privacy.
Frequently Asked Questions
How long does it take for cedar trees to create a full privacy screen?
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Timeline depends heavily on the variety you choose and how closely you plant them. Fast-growing varieties like Thuja Green Giant can create a solid screen in 3 to 5 years when planted 5 to 6 feet apart. Slower varieties like Emerald Green Arborvitae may take 4 to 6 years at similar spacing.
Tighter spacing accelerates coverage but increases long-term competition risk. If you need privacy quickly, plant at the tighter end of the recommended range and plan to thin or remove every other tree once canopies begin to crowd.
Can you plant cedar trees too close together?
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Yes, and it is one of the most common mistakes homeowners make. Trees planted too close compete for water and nutrients, leading to thinning foliage, reduced growth, and increased susceptibility to disease and pests. The lower branches often die off first, which ironically destroys the privacy effect at eye level.
If your trees are already too close and showing signs of stress, consider removing every other tree before the problem gets worse. Thinning a row is much cheaper than replacing a full planting that has declined due to overcrowding.
Do cedar trees need to be watered after planting?
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Yes. Consistent watering during the first one to two years is critical for establishment. Water deeply two to three times per week for the first month, then reduce to once per week through the first growing season. In the second year, water during dry spells of more than two weeks.
Once established, most cedar varieties are quite drought tolerant. Eastern Red Cedar in particular is one of the most drought-resistant privacy trees available. However, even drought-tolerant trees benefit from supplemental watering during extended dry periods in their first few years.
Will cedar trees block noise as well as visual privacy?
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Dense cedar plantings do reduce noise, though not eliminate it. A mature double row of cedars can reduce perceived noise by 5 to 10 decibels, which is noticeable but not dramatic. The denser the canopy and the more depth the planting has, the better the noise reduction effect.
Spacing plays a direct role here. Tighter spacing creates a denser canopy mass that absorbs and deflects more sound. If noise reduction is a priority alongside visual privacy, plant at the tighter end of your variety's recommended spacing range and consider a double-row layout.
Can you plant cedars near a fence or property line?
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Yes, but placement matters. As a general rule, plant cedars at least 3 to 4 feet from a fence to allow the canopy to develop on both sides of the trunk. Planting too close to a fence causes one-sided growth and can damage fence posts as roots and trunks expand over time.
For property lines, check local ordinances before planting. Many municipalities require trees to be set back a minimum of 3 to 5 feet from the property boundary. Root spread from large cedar varieties can extend well beyond the canopy edge, so leave adequate buffer from underground utilities, foundations, and drainage systems.
How much do cedar privacy trees cost?
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Cedar privacy tree prices vary by variety and size. Here is a general breakdown of what you can expect to pay for the most popular options:
- Emerald Green Arborvitae — One of the most affordable options for a dense privacy screen due to its narrow spread and tight spacing requirements.
- Thuja Green Giant — A slightly higher upfront cost offset by faster growth and fewer trees needed per linear foot of screen.
- Cryptomeria Radicans — Premium pricing reflects its fast growth rate and dense, year-round coverage.
When budgeting for a full privacy screen, multiply your per-tree cost by the number of trees your layout requires. A 50-foot screen of Emerald Green Arborvitae planted 3 feet apart requires approximately 17 trees. The same length using Thuja Green Giant at 6 feet apart requires about 9 trees, often making the higher per-tree cost comparable in total project price.