Arborvitae grow at a moderate pace, adding one to two feet annually. If you are wondering how fast do arborvitae grow, the answer depends on the specific variety and growing conditions. Most homeowners choose these evergreens for privacy screens, but their growth rate can vary widely.
Some types shoot up quickly, while others take their time. Understanding these differences helps you plan your landscape better. Let us break down the growth rates for popular arborvitae varieties.
How Fast Do Arborvitae Grow
On average, arborvitae grow 1 to 2 feet per year once established. However, this is a general estimate. The exact speed depends on the cultivar, soil quality, sunlight, and water availability.
For example, the Green Giant arborvitae can grow 3 to 5 feet per year in ideal conditions. That is much faster than the standard rate. In contrast, the Emerald Green arborvitae grows slower, at about 6 to 12 inches annually.
Here is a quick breakdown of common varieties and their growth rates:
- Green Giant: 3–5 feet per year
- Emerald Green: 6–12 inches per year
- Techny: 1–2 feet per year
- North Pole: 1–2 feet per year
- American Arborvitae: 1–2 feet per year
These numbers assume proper care. Without good soil or enough water, growth slows down significantly.
Factors That Influence Growth Speed
Several factors affect how fast your arborvitae will grow. You cannot control everything, but you can optimize the conditions.
Soil Quality
Arborvitae prefer well-draining, loamy soil with a pH between 6.0 and 8.0. If your soil is too sandy or too clay-heavy, growth will be slower. Adding organic matter like compost can improve soil structure.
Test your soil before planting. A simple kit from a garden center tells you the pH and nutrient levels. Adjust as needed.
Sunlight Requirements
Full sun is best for arborvitae. They need at least 6 hours of direct sunlight daily. In partial shade, growth slows down and the plants may become leggy.
If you plant them in too much shade, expect less than 6 inches of growth per year. That is frustrating if you want a quick privacy screen.
Watering Needs
Consistent moisture is critical, especially in the first two years. Arborvitae do not like drought. Dry soil stresses the plants and stunts growth.
Water deeply once a week during dry spells. Mulching around the base helps retain moisture and keeps roots cool.
Spacing and Competition
Overcrowding slows growth. If you plant arborvitae too close together, they compete for nutrients and water. Follow spacing guidelines for your specific variety.
For Green Giant, space them 5 to 6 feet apart. For Emerald Green, 3 to 4 feet is enough. Proper spacing ensures each plant gets what it needs.
How To Speed Up Arborvitae Growth
You can take steps to help your arborvitae grow faster. These methods work best when combined with good basic care.
- Choose a fast-growing variety: Green Giant is the fastest. If speed matters, pick this one.
- Prepare the soil well: Mix in compost before planting. This gives roots a nutrient boost.
- Water consistently: Do not let the soil dry out completely. Use a soaker hose for even moisture.
- Fertilize in spring: Use a balanced, slow-release fertilizer like 10-10-10. Apply once in early spring.
- Mulch around the base: A 2-inch layer of wood chips or bark keeps soil moist and cool.
- Prune selectively: Remove dead or damaged branches only. Heavy pruning slows growth.
These steps can increase growth by 20 to 30 percent in some cases. But do not expect miracles. Genetics set the upper limit.
Common Mistakes That Slow Growth
Even with good intentions, mistakes happen. Here are common errors that reduce growth speed.
- Overwatering: Soggy soil causes root rot. Water only when the top inch of soil is dry.
- Underwatering: Drought stress stops growth. Check soil moisture regularly.
- Planting too deep: The root flare should be at soil level. Buried trunks rot.
- Ignoring pests: Bagworms and spider mites damage foliage. Treat infestations early.
- Skipping winter protection: Harsh winds dry out foliage. Wrap young plants in burlap.
Avoid these pitfalls to keep your arborvitae growing at their best pace.
Growth Rates By Variety
Different arborvitae varieties have distinct growth habits. Knowing these helps you choose the right plant for your needs.
Green Giant Arborvitae
This is the fastest-growing arborvitae. It can reach 50 to 60 feet tall at maturity. In ideal conditions, it grows 3 to 5 feet per year.
Green Giant is excellent for tall privacy screens. It tolerates heat and humidity better than other varieties. Plant it in full sun for best results.
Emerald Green Arborvitae
This popular variety grows slower, at 6 to 12 inches per year. It reaches 12 to 15 feet tall eventually. Its narrow shape makes it good for tight spaces.
Emerald Green maintains its color well in winter. It is a reliable choice for formal hedges. But do not expect quick coverage.
Techny Arborvitae
Techny grows 1 to 2 feet per year. It reaches 10 to 15 feet tall. This variety is dense and cold-hardy.
Techny works well in windy areas. It has a pyramidal shape that looks neat without pruning. Growth is steady but not dramatic.
North Pole Arborvitae
North Pole grows 1 to 2 feet per year. It stays narrow, at 3 to 4 feet wide. Mature height is 10 to 15 feet.
This variety is ideal for small yards. It grows upright without spreading. Growth rate is consistent with proper care.
American Arborvitae
Also called Eastern arborvitae, this native variety grows 1 to 2 feet per year. It can reach 40 to 60 feet in the wild. In landscapes, it often stays smaller.
American arborvitae is very hardy. It tolerates cold climates well. Growth slows in poor soil.
How To Measure Growth Rate
Tracking growth helps you know if your care is working. Here is a simple method.
- Measure the height of your arborvitae at planting time. Use a tape measure from ground to tip.
- Mark the date on a calendar or notebook.
- One year later, measure again. Subtract the original height from the new height.
- Divide by the number of years for average annual growth.
Do this for each plant. Growth can vary even within the same row. If one plant is lagging, check for issues like pests or poor drainage.
Remember that first-year growth is often slower. Plants focus on root establishment. By the second or third year, you should see faster growth.
When To Expect Full Height
Arborvitae do not grow at the same speed every year. They grow fastest in the first 10 to 15 years. After that, growth slows as they approach maturity.
For example, a Green Giant planted today might reach 15 feet in 5 years. But it could take 20 years to hit 50 feet. The growth curve flattens over time.
Here are approximate timelines for common varieties:
- Green Giant: 15 feet in 5 years, 30 feet in 10 years
- Emerald Green: 6 feet in 5 years, 12 feet in 10 years
- Techny: 10 feet in 5 years, 15 feet in 10 years
- North Pole: 10 feet in 5 years, 15 feet in 10 years
These are estimates. Actual results depend on your local conditions.
Seasonal Growth Patterns
Arborvitae grow most actively in spring and early summer. During this time, they produce new shoots and foliage. Growth slows in late summer and stops in winter.
In spring, look for soft, light green tips. These are new growth. They harden off by midsummer. Do not prune after August, as this can damage next year’s buds.
Winter dormancy is normal. Do not worry if your arborvitae stop growing in cold months. They will resume in spring.
Can You Force Faster Growth?
Some gardeners try to push growth with extra fertilizer or water. This rarely works and can harm the plant. Over-fertilizing causes weak, leggy growth that is prone to disease.
Stick to the basics: good soil, adequate water, and full sun. These give you the best natural growth rate. Trying to rush nature often backfires.
If you need a fast screen, plant Green Giant or use larger specimens from a nursery. Bigger plants cost more but give instant coverage.
Frequently Asked Questions
How Fast Do Arborvitae Grow In The First Year?
First-year growth is often slow, around 6 to 12 inches. The plant focuses on root development. Expect faster growth from year two onward.
What Is The Fastest Growing Arborvitae Variety?
Green Giant is the fastest, growing 3 to 5 feet per year. It is ideal for quick privacy screens.
Do Arborvitae Grow Faster In Sun Or Shade?
They grow much faster in full sun. Shade reduces growth by half or more. Always plant in a sunny spot for best results.
How Can I Make My Arborvitae Grow Taller?
Provide consistent water, fertilize lightly in spring, and ensure full sun. Avoid pruning the top, as this stops upward growth.
Why Are My Arborvitae Not Growing?
Common reasons include poor soil, too much shade, drought, pests, or planting too deep. Check each factor and correct as needed.
Final Thoughts On Arborvitae Growth
Knowing how fast do arborvitae grow helps you set realistic expectations. Most varieties add 1 to 2 feet per year, but some are faster or slower. Choose the right type for your timeline and space.
With proper care, your arborvitae will thrive and provide beauty for decades. Focus on soil, sunlight, and water. Avoid common mistakes, and you will see steady growth year after year.
Remember that patience is key. Arborvitae are not instant trees, but they reward good care with reliable performance. Plan ahead, and your landscape will thank you.